Home / 12,379,854.20-18,569,781.30-9,191,208.20

Finding the Fourth Proportional to 12,379,854.20, 18,569,781.30 and 9,191,208.20

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Solution

The fourth proportional to 12,379,854.20, 18,569,781.30 and 9,191,208.20 is: 13,786,812.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,379,854.20 : 18,569,781.30 = 9,191,208.20 : x
  2. Step 2: Convert to fraction form
    12,379,854.20/18,569,781.30 = 9,191,208.20/x
  3. Step 3: Cross multiply
    12,379,854.20x = 18,569,781.30 × 9,191,208.20
  4. Step 4: Simplify right side
    12,379,854.20x = 170,678,726,156,766.66
  5. Step 5: Solve for x
    x = 170,678,726,156,766.66/12,379,854.20
  6. Step 6: Final answer
    x = 13,786,812.30

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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.