Home / 13,680.20-20,521.50-10,027.88

Finding the Fourth Proportional to 13,680.20, 20,521.50 and 10,027.88

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Solution

The fourth proportional to 13,680.20, 20,521.50 and 10,027.88 is: 15,042.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,680.20 : 20,521.50 = 10,027.88 : x
  2. Step 2: Convert to fraction form
    13,680.20/20,521.50 = 10,027.88/x
  3. Step 3: Cross multiply
    13,680.20x = 20,521.50 × 10,027.88
  4. Step 4: Simplify right side
    13,680.20x = 205,787,139.42
  5. Step 5: Solve for x
    x = 205,787,139.42/13,680.20
  6. Step 6: Final answer
    x = 15,042.70

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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.