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Finding the Fourth Proportional to 10,472.59, 15,690.42 and 5,531.32

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Solution

The fourth proportional to 10,472.59, 15,690.42 and 5,531.32 is: 8,287.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,472.59 : 15,690.42 = 5,531.32 : x
  2. Step 2: Convert to fraction form
    10,472.59/15,690.42 = 5,531.32/x
  3. Step 3: Cross multiply
    10,472.59x = 15,690.42 × 5,531.32
  4. Step 4: Simplify right side
    10,472.59x = 86,788,733.95
  5. Step 5: Solve for x
    x = 86,788,733.95/10,472.59
  6. Step 6: Final answer
    x = 8,287.23

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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.