Home / 20,755.62-28,648.89-14,470.02

Finding the Fourth Proportional to 20,755.62, 28,648.89 and 14,470.02

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Solution

The fourth proportional to 20,755.62, 28,648.89 and 14,470.02 is: 19,972.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,755.62 : 28,648.89 = 14,470.02 : x
  2. Step 2: Convert to fraction form
    20,755.62/28,648.89 = 14,470.02/x
  3. Step 3: Cross multiply
    20,755.62x = 28,648.89 × 14,470.02
  4. Step 4: Simplify right side
    20,755.62x = 414,550,011.28
  5. Step 5: Solve for x
    x = 414,550,011.28/20,755.62
  6. Step 6: Final answer
    x = 19,972.90

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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.