Home / 12,146,947.20-18,199,425.60-7,884,921.60

Finding the Fourth Proportional to 12,146,947.20, 18,199,425.60 and 7,884,921.60

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Solution

The fourth proportional to 12,146,947.20, 18,199,425.60 and 7,884,921.60 is: 11,813,753.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,146,947.20 : 18,199,425.60 = 7,884,921.60 : x
  2. Step 2: Convert to fraction form
    12,146,947.20/18,199,425.60 = 7,884,921.60/x
  3. Step 3: Cross multiply
    12,146,947.20x = 18,199,425.60 × 7,884,921.60
  4. Step 4: Simplify right side
    12,146,947.20x = 143,501,044,021,032.97
  5. Step 5: Solve for x
    x = 143,501,044,021,032.97/12,146,947.20
  6. Step 6: Final answer
    x = 11,813,753.83

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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.