Home / 18,873,721.20-28,331,868.60-12,496,429.20

Finding the Fourth Proportional to 18,873,721.20, 28,331,868.60 and 12,496,429.20

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Solution

The fourth proportional to 18,873,721.20, 28,331,868.60 and 12,496,429.20 is: 18,758,737.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,873,721.20 : 28,331,868.60 = 12,496,429.20 : x
  2. Step 2: Convert to fraction form
    18,873,721.20/28,331,868.60 = 12,496,429.20/x
  3. Step 3: Cross multiply
    18,873,721.20x = 28,331,868.60 × 12,496,429.20
  4. Step 4: Simplify right side
    18,873,721.20x = 354,047,190,063,603.12
  5. Step 5: Solve for x
    x = 354,047,190,063,603.12/18,873,721.20
  6. Step 6: Final answer
    x = 18,758,737.95

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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.