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Finding the Fourth Proportional to 14,691.71, 20,269.58 and 9,655.54

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Solution

The fourth proportional to 14,691.71, 20,269.58 and 9,655.54 is: 13,321.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,691.71 : 20,269.58 = 9,655.54 : x
  2. Step 2: Convert to fraction form
    14,691.71/20,269.58 = 9,655.54/x
  3. Step 3: Cross multiply
    14,691.71x = 20,269.58 × 9,655.54
  4. Step 4: Simplify right side
    14,691.71x = 195,713,713.94
  5. Step 5: Solve for x
    x = 195,713,713.94/14,691.71
  6. Step 6: Final answer
    x = 13,321.37

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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.