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Finding the Fourth Proportional to 14,755.31, 20,349.05 and 9,449.11

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Solution

The fourth proportional to 14,755.31, 20,349.05 and 9,449.11 is: 13,031.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,755.31 : 20,349.05 = 9,449.11 : x
  2. Step 2: Convert to fraction form
    14,755.31/20,349.05 = 9,449.11/x
  3. Step 3: Cross multiply
    14,755.31x = 20,349.05 × 9,449.11
  4. Step 4: Simplify right side
    14,755.31x = 192,280,302.15
  5. Step 5: Solve for x
    x = 192,280,302.15/14,755.31
  6. Step 6: Final answer
    x = 13,031.26

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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.