Home / 14,781.87-20,385.67-9,475.66

Finding the Fourth Proportional to 14,781.87, 20,385.67 and 9,475.66

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Solution

The fourth proportional to 14,781.87, 20,385.67 and 9,475.66 is: 13,067.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,781.87 : 20,385.67 = 9,475.66 : x
  2. Step 2: Convert to fraction form
    14,781.87/20,385.67 = 9,475.66/x
  3. Step 3: Cross multiply
    14,781.87x = 20,385.67 × 9,475.66
  4. Step 4: Simplify right side
    14,781.87x = 193,167,677.79
  5. Step 5: Solve for x
    x = 193,167,677.79/14,781.87
  6. Step 6: Final answer
    x = 13,067.88

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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.