Home / 20,998,597.20-28,981,821.96-12,296,261.76

Finding the Fourth Proportional to 20,998,597.20, 28,981,821.96 and 12,296,261.76

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Solution

The fourth proportional to 20,998,597.20, 28,981,821.96 and 12,296,261.76 is: 16,971,041.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,998,597.20 : 28,981,821.96 = 12,296,261.76 : x
  2. Step 2: Convert to fraction form
    20,998,597.20/28,981,821.96 = 12,296,261.76/x
  3. Step 3: Cross multiply
    20,998,597.20x = 28,981,821.96 × 12,296,261.76
  4. Step 4: Simplify right side
    20,998,597.20x = 356,368,069,101,876.25
  5. Step 5: Solve for x
    x = 356,368,069,101,876.25/20,998,597.20
  6. Step 6: Final answer
    x = 16,971,041.72

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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.