Home / 18,815,721.35-28,218,122.51-7,885,625.38

Finding the Fourth Proportional to 18,815,721.35, 28,218,122.51 and 7,885,625.38

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Solution

The fourth proportional to 18,815,721.35, 28,218,122.51 and 7,885,625.38 is: 11,826,150.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,815,721.35 : 28,218,122.51 = 7,885,625.38 : x
  2. Step 2: Convert to fraction form
    18,815,721.35/28,218,122.51 = 7,885,625.38/x
  3. Step 3: Cross multiply
    18,815,721.35x = 28,218,122.51 × 7,885,625.38
  4. Step 4: Simplify right side
    18,815,721.35x = 222,517,542,930,831.88
  5. Step 5: Solve for x
    x = 222,517,542,930,831.88/18,815,721.35
  6. Step 6: Final answer
    x = 11,826,150.00

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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.