Home / 28,239.12-42,337.92-13,458.42

Finding the Fourth Proportional to 28,239.12, 42,337.92 and 13,458.42

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Solution

The fourth proportional to 28,239.12, 42,337.92 and 13,458.42 is: 20,177.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,239.12 : 42,337.92 = 13,458.42 : x
  2. Step 2: Convert to fraction form
    28,239.12/42,337.92 = 13,458.42/x
  3. Step 3: Cross multiply
    28,239.12x = 42,337.92 × 13,458.42
  4. Step 4: Simplify right side
    28,239.12x = 569,801,230.30
  5. Step 5: Solve for x
    x = 569,801,230.30/28,239.12
  6. Step 6: Final answer
    x = 20,177.73

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1.5x scale

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.