Home / 12,138,356.10-18,207,534.15-4,946,187.90

Finding the Fourth Proportional to 12,138,356.10, 18,207,534.15 and 4,946,187.90

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Solution

The fourth proportional to 12,138,356.10, 18,207,534.15 and 4,946,187.90 is: 7,419,281.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,138,356.10 : 18,207,534.15 = 4,946,187.90 : x
  2. Step 2: Convert to fraction form
    12,138,356.10/18,207,534.15 = 4,946,187.90/x
  3. Step 3: Cross multiply
    12,138,356.10x = 18,207,534.15 × 4,946,187.90
  4. Step 4: Simplify right side
    12,138,356.10x = 90,057,885,101,566.78
  5. Step 5: Solve for x
    x = 90,057,885,101,566.78/12,138,356.10
  6. Step 6: Final answer
    x = 7,419,281.85

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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.