Home / 12,131,319.66-18,188,012.79-7,337,853.06

Finding the Fourth Proportional to 12,131,319.66, 18,188,012.79 and 7,337,853.06

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Solution

The fourth proportional to 12,131,319.66, 18,188,012.79 and 7,337,853.06 is: 11,001,355.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,131,319.66 : 18,188,012.79 = 7,337,853.06 : x
  2. Step 2: Convert to fraction form
    12,131,319.66/18,188,012.79 = 7,337,853.06/x
  3. Step 3: Cross multiply
    12,131,319.66x = 18,188,012.79 × 7,337,853.06
  4. Step 4: Simplify right side
    12,131,319.66x = 133,460,965,306,420.62
  5. Step 5: Solve for x
    x = 133,460,965,306,420.62/12,131,319.66
  6. Step 6: Final answer
    x = 11,001,355.92

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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.