Home / 11,321.10-15,612.12-8,798.76

Finding the Fourth Proportional to 11,321.10, 15,612.12 and 8,798.76

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Solution

The fourth proportional to 11,321.10, 15,612.12 and 8,798.76 is: 12,133.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,321.10 : 15,612.12 = 8,798.76 : x
  2. Step 2: Convert to fraction form
    11,321.10/15,612.12 = 8,798.76/x
  3. Step 3: Cross multiply
    11,321.10x = 15,612.12 × 8,798.76
  4. Step 4: Simplify right side
    11,321.10x = 137,367,296.97
  5. Step 5: Solve for x
    x = 137,367,296.97/11,321.10
  6. Step 6: Final answer
    x = 12,133.74

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Find fourth proportional to 5,660.55, 7,806.06 and 4,399.38
Half scale
Find fourth proportional to 22,642.20, 31,224.24 and 17,597.52
Double scale
Find fourth proportional to 11,322.10, 15,613.50 and 8,799.76
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.