Home / 12,399,195.70-18,565,615.95-7,887,042.10

Finding the Fourth Proportional to 12,399,195.70, 18,565,615.95 and 7,887,042.10

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Solution

The fourth proportional to 12,399,195.70, 18,565,615.95 and 7,887,042.10 is: 11,809,459.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,399,195.70 : 18,565,615.95 = 7,887,042.10 : x
  2. Step 2: Convert to fraction form
    12,399,195.70/18,565,615.95 = 7,887,042.10/x
  3. Step 3: Cross multiply
    12,399,195.70x = 18,565,615.95 × 7,887,042.10
  4. Step 4: Simplify right side
    12,399,195.70x = 146,427,794,610,081.47
  5. Step 5: Solve for x
    x = 146,427,794,610,081.47/12,399,195.70
  6. Step 6: Final answer
    x = 11,809,459.11

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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.