Home / 20,470.04-28,251.16-11,517.92

Finding the Fourth Proportional to 20,470.04, 28,251.16 and 11,517.92

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Solution

The fourth proportional to 20,470.04, 28,251.16 and 11,517.92 is: 15,896.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,470.04 : 28,251.16 = 11,517.92 : x
  2. Step 2: Convert to fraction form
    20,470.04/28,251.16 = 11,517.92/x
  3. Step 3: Cross multiply
    20,470.04x = 28,251.16 × 11,517.92
  4. Step 4: Simplify right side
    20,470.04x = 325,394,600.79
  5. Step 5: Solve for x
    x = 325,394,600.79/20,470.04
  6. Step 6: Final answer
    x = 15,896.14

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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.