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Finding the Fourth Proportional to 10,469.31, 15,703.92 and 9,943.74

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Solution

The fourth proportional to 10,469.31, 15,703.92 and 9,943.74 is: 14,915.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,469.31 : 15,703.92 = 9,943.74 : x
  2. Step 2: Convert to fraction form
    10,469.31/15,703.92 = 9,943.74/x
  3. Step 3: Cross multiply
    10,469.31x = 15,703.92 × 9,943.74
  4. Step 4: Simplify right side
    10,469.31x = 156,155,697.46
  5. Step 5: Solve for x
    x = 156,155,697.46/10,469.31
  6. Step 6: Final answer
    x = 14,915.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.