Home / 12,109,747.80-18,164,184.30-4,921,078.80

Finding the Fourth Proportional to 12,109,747.80, 18,164,184.30 and 4,921,078.80

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Solution

The fourth proportional to 12,109,747.80, 18,164,184.30 and 4,921,078.80 is: 7,381,440.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,109,747.80 : 18,164,184.30 = 4,921,078.80 : x
  2. Step 2: Convert to fraction form
    12,109,747.80/18,164,184.30 = 4,921,078.80/x
  3. Step 3: Cross multiply
    12,109,747.80x = 18,164,184.30 × 4,921,078.80
  4. Step 4: Simplify right side
    12,109,747.80x = 89,387,382,278,022.84
  5. Step 5: Solve for x
    x = 89,387,382,278,022.84/12,109,747.80
  6. Step 6: Final answer
    x = 7,381,440.45

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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.