Home / 28,512.60-42,793.20-12,741.90

Finding the Fourth Proportional to 28,512.60, 42,793.20 and 12,741.90

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Solution

The fourth proportional to 28,512.60, 42,793.20 and 12,741.90 is: 19,123.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,512.60 : 42,793.20 = 12,741.90 : x
  2. Step 2: Convert to fraction form
    28,512.60/42,793.20 = 12,741.90/x
  3. Step 3: Cross multiply
    28,512.60x = 42,793.20 × 12,741.90
  4. Step 4: Simplify right side
    28,512.60x = 545,266,675.08
  5. Step 5: Solve for x
    x = 545,266,675.08/28,512.60
  6. Step 6: Final answer
    x = 19,123.71

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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.