Home / 20,327.52-28,060.32-12,372

Finding the Fourth Proportional to 20,327.52, 28,060.32 and 12,372

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Solution

The fourth proportional to 20,327.52, 28,060.32 and 12,372 is: 17,078.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,327.52 : 28,060.32 = 12,372 : x
  2. Step 2: Convert to fraction form
    20,327.52/28,060.32 = 12,372/x
  3. Step 3: Cross multiply
    20,327.52x = 28,060.32 × 12,372
  4. Step 4: Simplify right side
    20,327.52x = 347,162,279.04
  5. Step 5: Solve for x
    x = 347,162,279.04/20,327.52
  6. Step 6: Final answer
    x = 17,078.44

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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.