Home / 11,081.42-15,302.42-8,247.76

Finding the Fourth Proportional to 11,081.42, 15,302.42 and 8,247.76

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Solution

The fourth proportional to 11,081.42, 15,302.42 and 8,247.76 is: 11,389.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,081.42 : 15,302.42 = 8,247.76 : x
  2. Step 2: Convert to fraction form
    11,081.42/15,302.42 = 8,247.76/x
  3. Step 3: Cross multiply
    11,081.42x = 15,302.42 × 8,247.76
  4. Step 4: Simplify right side
    11,081.42x = 126,210,639.01
  5. Step 5: Solve for x
    x = 126,210,639.01/11,081.42
  6. Step 6: Final answer
    x = 11,389.39

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Half scale
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Double scale
Find fourth proportional to 11,082.42, 15,303.80 and 8,248.76
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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.