Home / 12,109,778.64-18,146,729.70-9,966,027.78

Finding the Fourth Proportional to 12,109,778.64, 18,146,729.70 and 9,966,027.78

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Solution

The fourth proportional to 12,109,778.64, 18,146,729.70 and 9,966,027.78 is: 14,934,278.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,109,778.64 : 18,146,729.70 = 9,966,027.78 : x
  2. Step 2: Convert to fraction form
    12,109,778.64/18,146,729.70 = 9,966,027.78/x
  3. Step 3: Cross multiply
    12,109,778.64x = 18,146,729.70 × 9,966,027.78
  4. Step 4: Simplify right side
    12,109,778.64x = 180,850,812,306,351.03
  5. Step 5: Solve for x
    x = 180,850,812,306,351.03/12,109,778.64
  6. Step 6: Final answer
    x = 14,934,278.96

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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.