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Finding the Fourth Proportional to 29,472.10, 40,672.72 and 16,899.28

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Solution

The fourth proportional to 29,472.10, 40,672.72 and 16,899.28 is: 23,321.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,472.10 : 40,672.72 = 16,899.28 : x
  2. Step 2: Convert to fraction form
    29,472.10/40,672.72 = 16,899.28/x
  3. Step 3: Cross multiply
    29,472.10x = 40,672.72 × 16,899.28
  4. Step 4: Simplify right side
    29,472.10x = 687,339,683.64
  5. Step 5: Solve for x
    x = 687,339,683.64/29,472.10
  6. Step 6: Final answer
    x = 23,321.71

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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.