Home / 20,565.42-28,335.14-13,839.37

Finding the Fourth Proportional to 20,565.42, 28,335.14 and 13,839.37

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Solution

The fourth proportional to 20,565.42, 28,335.14 and 13,839.37 is: 19,067.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,565.42 : 28,335.14 = 13,839.37 : x
  2. Step 2: Convert to fraction form
    20,565.42/28,335.14 = 13,839.37/x
  3. Step 3: Cross multiply
    20,565.42x = 28,335.14 × 13,839.37
  4. Step 4: Simplify right side
    20,565.42x = 392,140,486.46
  5. Step 5: Solve for x
    x = 392,140,486.46/20,565.42
  6. Step 6: Final answer
    x = 19,067.95

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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.