Home / 18,868.72-28,296.40-5,538

Finding the Fourth Proportional to 18,868.72, 28,296.40 and 5,538

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Solution

The fourth proportional to 18,868.72, 28,296.40 and 5,538 is: 8,305.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,868.72 : 28,296.40 = 5,538 : x
  2. Step 2: Convert to fraction form
    18,868.72/28,296.40 = 5,538/x
  3. Step 3: Cross multiply
    18,868.72x = 28,296.40 × 5,538
  4. Step 4: Simplify right side
    18,868.72x = 156,705,463.20
  5. Step 5: Solve for x
    x = 156,705,463.20/18,868.72
  6. Step 6: Final answer
    x = 8,305.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.