Home / 11,352.17-15,640.45-8,515.15

Finding the Fourth Proportional to 11,352.17, 15,640.45 and 8,515.15

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Solution

The fourth proportional to 11,352.17, 15,640.45 and 8,515.15 is: 11,731.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,352.17 : 15,640.45 = 8,515.15 : x
  2. Step 2: Convert to fraction form
    11,352.17/15,640.45 = 8,515.15/x
  3. Step 3: Cross multiply
    11,352.17x = 15,640.45 × 8,515.15
  4. Step 4: Simplify right side
    11,352.17x = 133,180,717.43
  5. Step 5: Solve for x
    x = 133,180,717.43/11,352.17
  6. Step 6: Final answer
    x = 11,731.74

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Double scale
Find fourth proportional to 11,353.17, 15,641.83 and 8,516.15
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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.