Home / 12,240,945.90-18,345,672.45-7,443,542.70

Finding the Fourth Proportional to 12,240,945.90, 18,345,672.45 and 7,443,542.70

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Solution

The fourth proportional to 12,240,945.90, 18,345,672.45 and 7,443,542.70 is: 11,155,738.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,240,945.90 : 18,345,672.45 = 7,443,542.70 : x
  2. Step 2: Convert to fraction form
    12,240,945.90/18,345,672.45 = 7,443,542.70/x
  3. Step 3: Cross multiply
    12,240,945.90x = 18,345,672.45 × 7,443,542.70
  4. Step 4: Simplify right side
    12,240,945.90x = 136,556,796,241,788.61
  5. Step 5: Solve for x
    x = 136,556,796,241,788.61/12,240,945.90
  6. Step 6: Final answer
    x = 11,155,738.89

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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.