Home / 20,932.83-28,867.47-13,750.11

Finding the Fourth Proportional to 20,932.83, 28,867.47 and 13,750.11

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Solution

The fourth proportional to 20,932.83, 28,867.47 and 13,750.11 is: 18,962.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,932.83 : 28,867.47 = 13,750.11 : x
  2. Step 2: Convert to fraction form
    20,932.83/28,867.47 = 13,750.11/x
  3. Step 3: Cross multiply
    20,932.83x = 28,867.47 × 13,750.11
  4. Step 4: Simplify right side
    20,932.83x = 396,930,887.92
  5. Step 5: Solve for x
    x = 396,930,887.92/20,932.83
  6. Step 6: Final answer
    x = 18,962.12

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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.