Home / 45,120.06-67,691.61-13,530

Finding the Fourth Proportional to 45,120.06, 67,691.61 and 13,530

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Solution

The fourth proportional to 45,120.06, 67,691.61 and 13,530 is: 20,298.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,120.06 : 67,691.61 = 13,530 : x
  2. Step 2: Convert to fraction form
    45,120.06/67,691.61 = 13,530/x
  3. Step 3: Cross multiply
    45,120.06x = 67,691.61 × 13,530
  4. Step 4: Simplify right side
    45,120.06x = 915,867,483.30
  5. Step 5: Solve for x
    x = 915,867,483.30/45,120.06
  6. Step 6: Final answer
    x = 20,298.45

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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.