Home / 12,382,921.80-18,558,636.30-5,979,385.80

Finding the Fourth Proportional to 12,382,921.80, 18,558,636.30 and 5,979,385.80

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Solution

The fourth proportional to 12,382,921.80, 18,558,636.30 and 5,979,385.80 is: 8,961,475.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,382,921.80 : 18,558,636.30 = 5,979,385.80 : x
  2. Step 2: Convert to fraction form
    12,382,921.80/18,558,636.30 = 5,979,385.80/x
  3. Step 3: Cross multiply
    12,382,921.80x = 18,558,636.30 × 5,979,385.80
  4. Step 4: Simplify right side
    12,382,921.80x = 110,969,246,359,584.55
  5. Step 5: Solve for x
    x = 110,969,246,359,584.55/12,382,921.80
  6. Step 6: Final answer
    x = 8,961,475.18

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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.