Home / 12,491,636.80-18,737,455.20-3,972,834.40

Finding the Fourth Proportional to 12,491,636.80, 18,737,455.20 and 3,972,834.40

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Solution

The fourth proportional to 12,491,636.80, 18,737,455.20 and 3,972,834.40 is: 5,959,251.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,491,636.80 : 18,737,455.20 = 3,972,834.40 : x
  2. Step 2: Convert to fraction form
    12,491,636.80/18,737,455.20 = 3,972,834.40/x
  3. Step 3: Cross multiply
    12,491,636.80x = 18,737,455.20 × 3,972,834.40
  4. Step 4: Simplify right side
    12,491,636.80x = 74,440,806,587,018.88
  5. Step 5: Solve for x
    x = 74,440,806,587,018.88/12,491,636.80
  6. Step 6: Final answer
    x = 5,959,251.60

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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.