Home / 12,132,228.80-18,198,343.20-9,421,879.70

Finding the Fourth Proportional to 12,132,228.80, 18,198,343.20 and 9,421,879.70

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Solution

The fourth proportional to 12,132,228.80, 18,198,343.20 and 9,421,879.70 is: 14,132,819.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,132,228.80 : 18,198,343.20 = 9,421,879.70 : x
  2. Step 2: Convert to fraction form
    12,132,228.80/18,198,343.20 = 9,421,879.70/x
  3. Step 3: Cross multiply
    12,132,228.80x = 18,198,343.20 × 9,421,879.70
  4. Step 4: Simplify right side
    12,132,228.80x = 171,462,600,369,713.03
  5. Step 5: Solve for x
    x = 171,462,600,369,713.03/12,132,228.80
  6. Step 6: Final answer
    x = 14,132,819.55

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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.