Home / 18,722,407.20-28,083,610.80-13,646,234.40

Finding the Fourth Proportional to 18,722,407.20, 28,083,610.80 and 13,646,234.40

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Solution

The fourth proportional to 18,722,407.20, 28,083,610.80 and 13,646,234.40 is: 20,469,351.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,722,407.20 : 28,083,610.80 = 13,646,234.40 : x
  2. Step 2: Convert to fraction form
    18,722,407.20/28,083,610.80 = 13,646,234.40/x
  3. Step 3: Cross multiply
    18,722,407.20x = 28,083,610.80 × 13,646,234.40
  4. Step 4: Simplify right side
    18,722,407.20x = 383,235,535,775,171.56
  5. Step 5: Solve for x
    x = 383,235,535,775,171.56/18,722,407.20
  6. Step 6: Final answer
    x = 20,469,351.60

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Similar ratio
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1.5x scale

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.