Home / 18,728.50-28,096.80-5,581.92

Finding the Fourth Proportional to 18,728.50, 28,096.80 and 5,581.92

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Solution

The fourth proportional to 18,728.50, 28,096.80 and 5,581.92 is: 8,374.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,728.50 : 28,096.80 = 5,581.92 : x
  2. Step 2: Convert to fraction form
    18,728.50/28,096.80 = 5,581.92/x
  3. Step 3: Cross multiply
    18,728.50x = 28,096.80 × 5,581.92
  4. Step 4: Simplify right side
    18,728.50x = 156,834,089.86
  5. Step 5: Solve for x
    x = 156,834,089.86/18,728.50
  6. Step 6: Final answer
    x = 8,374.09

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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.