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Finding the Fourth Proportional to 14,757.80, 20,470.12 and 14,225.83

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Solution

The fourth proportional to 14,757.80, 20,470.12 and 14,225.83 is: 19,732.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,757.80 : 20,470.12 = 14,225.83 : x
  2. Step 2: Convert to fraction form
    14,757.80/20,470.12 = 14,225.83/x
  3. Step 3: Cross multiply
    14,757.80x = 20,470.12 × 14,225.83
  4. Step 4: Simplify right side
    14,757.80x = 291,204,360.46
  5. Step 5: Solve for x
    x = 291,204,360.46/14,757.80
  6. Step 6: Final answer
    x = 19,732.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.