Home / 12,321,709.20-18,493,061.40-5,508,766.80

Finding the Fourth Proportional to 12,321,709.20, 18,493,061.40 and 5,508,766.80

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Solution

The fourth proportional to 12,321,709.20, 18,493,061.40 and 5,508,766.80 is: 8,267,843.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,321,709.20 : 18,493,061.40 = 5,508,766.80 : x
  2. Step 2: Convert to fraction form
    12,321,709.20/18,493,061.40 = 5,508,766.80/x
  3. Step 3: Cross multiply
    12,321,709.20x = 18,493,061.40 × 5,508,766.80
  4. Step 4: Simplify right side
    12,321,709.20x = 101,873,962,670,681.52
  5. Step 5: Solve for x
    x = 101,873,962,670,681.52/12,321,709.20
  6. Step 6: Final answer
    x = 8,267,843.45

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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.