Home / 18,675.20-28,024.48-7,581.92

Finding the Fourth Proportional to 18,675.20, 28,024.48 and 7,581.92

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Solution

The fourth proportional to 18,675.20, 28,024.48 and 7,581.92 is: 11,377.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,675.20 : 28,024.48 = 7,581.92 : x
  2. Step 2: Convert to fraction form
    18,675.20/28,024.48 = 7,581.92/x
  3. Step 3: Cross multiply
    18,675.20x = 28,024.48 × 7,581.92
  4. Step 4: Simplify right side
    18,675.20x = 212,479,365.40
  5. Step 5: Solve for x
    x = 212,479,365.40/18,675.20
  6. Step 6: Final answer
    x = 11,377.62

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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.