Home / 20,726.62-28,600.52-13,919.28

Finding the Fourth Proportional to 20,726.62, 28,600.52 and 13,919.28

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Solution

The fourth proportional to 20,726.62, 28,600.52 and 13,919.28 is: 19,207.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,726.62 : 28,600.52 = 13,919.28 : x
  2. Step 2: Convert to fraction form
    20,726.62/28,600.52 = 13,919.28/x
  3. Step 3: Cross multiply
    20,726.62x = 28,600.52 × 13,919.28
  4. Step 4: Simplify right side
    20,726.62x = 398,098,646.03
  5. Step 5: Solve for x
    x = 398,098,646.03/20,726.62
  6. Step 6: Final answer
    x = 19,207.12

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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.