Home / 12,125,320.80-18,187,981.20-11,248,443.15

Finding the Fourth Proportional to 12,125,320.80, 18,187,981.20 and 11,248,443.15

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Solution

The fourth proportional to 12,125,320.80, 18,187,981.20 and 11,248,443.15 is: 16,872,664.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,125,320.80 : 18,187,981.20 = 11,248,443.15 : x
  2. Step 2: Convert to fraction form
    12,125,320.80/18,187,981.20 = 11,248,443.15/x
  3. Step 3: Cross multiply
    12,125,320.80x = 18,187,981.20 × 11,248,443.15
  4. Step 4: Simplify right side
    12,125,320.80x = 204,586,472,541,468.78
  5. Step 5: Solve for x
    x = 204,586,472,541,468.78/12,125,320.80
  6. Step 6: Final answer
    x = 16,872,664.73

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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.