Home / 15,551.38-21,461.12-8,478.19

Finding the Fourth Proportional to 15,551.38, 21,461.12 and 8,478.19

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Solution

The fourth proportional to 15,551.38, 21,461.12 and 8,478.19 is: 11,700.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,551.38 : 21,461.12 = 8,478.19 : x
  2. Step 2: Convert to fraction form
    15,551.38/21,461.12 = 8,478.19/x
  3. Step 3: Cross multiply
    15,551.38x = 21,461.12 × 8,478.19
  4. Step 4: Simplify right side
    15,551.38x = 181,951,452.97
  5. Step 5: Solve for x
    x = 181,951,452.97/15,551.38
  6. Step 6: Final answer
    x = 11,700.02

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Half scale
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Double scale
Find fourth proportional to 15,552.38, 21,462.50 and 8,479.19
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.