Home / 12,458,039.40-18,687,059.10-11,702,212.20

Finding the Fourth Proportional to 12,458,039.40, 18,687,059.10 and 11,702,212.20

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Solution

The fourth proportional to 12,458,039.40, 18,687,059.10 and 11,702,212.20 is: 17,553,318.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,458,039.40 : 18,687,059.10 = 11,702,212.20 : x
  2. Step 2: Convert to fraction form
    12,458,039.40/18,687,059.10 = 11,702,212.20/x
  3. Step 3: Cross multiply
    12,458,039.40x = 18,687,059.10 × 11,702,212.20
  4. Step 4: Simplify right side
    12,458,039.40x = 218,679,930,982,141.03
  5. Step 5: Solve for x
    x = 218,679,930,982,141.03/12,458,039.40
  6. Step 6: Final answer
    x = 17,553,318.30

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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.