Home / 20,538.52-28,337.80-12,577.84

Finding the Fourth Proportional to 20,538.52, 28,337.80 and 12,577.84

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Solution

The fourth proportional to 20,538.52, 28,337.80 and 12,577.84 is: 17,354.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,538.52 : 28,337.80 = 12,577.84 : x
  2. Step 2: Convert to fraction form
    20,538.52/28,337.80 = 12,577.84/x
  3. Step 3: Cross multiply
    20,538.52x = 28,337.80 × 12,577.84
  4. Step 4: Simplify right side
    20,538.52x = 356,428,314.35
  5. Step 5: Solve for x
    x = 356,428,314.35/20,538.52
  6. Step 6: Final answer
    x = 17,354.14

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1.5x scale

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.