Home / 10,221,003.20-15,331,504.80-8,394,420.80

Finding the Fourth Proportional to 10,221,003.20, 15,331,504.80 and 8,394,420.80

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Solution

The fourth proportional to 10,221,003.20, 15,331,504.80 and 8,394,420.80 is: 12,591,631.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,221,003.20 : 15,331,504.80 = 8,394,420.80 : x
  2. Step 2: Convert to fraction form
    10,221,003.20/15,331,504.80 = 8,394,420.80/x
  3. Step 3: Cross multiply
    10,221,003.20x = 15,331,504.80 × 8,394,420.80
  4. Step 4: Simplify right side
    10,221,003.20x = 128,699,102,788,419.86
  5. Step 5: Solve for x
    x = 128,699,102,788,419.86/10,221,003.20
  6. Step 6: Final answer
    x = 12,591,631.20

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Similar ratio
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1.5x scale

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.