Home / 12,215,998.80-18,323,998.20-11,656,126.80

Finding the Fourth Proportional to 12,215,998.80, 18,323,998.20 and 11,656,126.80

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Solution

The fourth proportional to 12,215,998.80, 18,323,998.20 and 11,656,126.80 is: 17,484,190.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,215,998.80 : 18,323,998.20 = 11,656,126.80 : x
  2. Step 2: Convert to fraction form
    12,215,998.80/18,323,998.20 = 11,656,126.80/x
  3. Step 3: Cross multiply
    12,215,998.80x = 18,323,998.20 × 11,656,126.80
  4. Step 4: Simplify right side
    12,215,998.80x = 213,586,846,502,171.75
  5. Step 5: Solve for x
    x = 213,586,846,502,171.75/12,215,998.80
  6. Step 6: Final answer
    x = 17,484,190.20

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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.