Home / 15,189,726.41-20,961,889.11-8,220,404.80

Finding the Fourth Proportional to 15,189,726.41, 20,961,889.11 and 8,220,404.80

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Solution

The fourth proportional to 15,189,726.41, 20,961,889.11 and 8,220,404.80 is: 11,344,194.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,189,726.41 : 20,961,889.11 = 8,220,404.80 : x
  2. Step 2: Convert to fraction form
    15,189,726.41/20,961,889.11 = 8,220,404.80/x
  3. Step 3: Cross multiply
    15,189,726.41x = 20,961,889.11 × 8,220,404.80
  4. Step 4: Simplify right side
    15,189,726.41x = 172,315,213,711,000.25
  5. Step 5: Solve for x
    x = 172,315,213,711,000.25/15,189,726.41
  6. Step 6: Final answer
    x = 11,344,194.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.