Home / 20,932.71-28,867.29-13,749.99

Finding the Fourth Proportional to 20,932.71, 28,867.29 and 13,749.99

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Solution

The fourth proportional to 20,932.71, 28,867.29 and 13,749.99 is: 18,961.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,932.71 : 28,867.29 = 13,749.99 : x
  2. Step 2: Convert to fraction form
    20,932.71/28,867.29 = 13,749.99/x
  3. Step 3: Cross multiply
    20,932.71x = 28,867.29 × 13,749.99
  4. Step 4: Simplify right side
    20,932.71x = 396,924,948.83
  5. Step 5: Solve for x
    x = 396,924,948.83/20,932.71
  6. Step 6: Final answer
    x = 18,961.95

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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.