Home / 20,781,414,809.92-28,678,578,162.50-12,208,202,793.72

Finding the Fourth Proportional to 20,781,414,809.92, 28,678,578,162.50 and 12,208,202,793.72

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Solution

The fourth proportional to 20,781,414,809.92, 28,678,578,162.50 and 12,208,202,793.72 is: 16,847,452,459.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,781,414,809.92 : 28,678,578,162.50 = 12,208,202,793.72 : x
  2. Step 2: Convert to fraction form
    20,781,414,809.92/28,678,578,162.50 = 12,208,202,793.72/x
  3. Step 3: Cross multiply
    20,781,414,809.92x = 28,678,578,162.50 × 12,208,202,793.72
  4. Step 4: Simplify right side
    20,781,414,809.92x = 350,113,898,043,440,234,496
  5. Step 5: Solve for x
    x = 350,113,898,043,440,234,496/20,781,414,809.92
  6. Step 6: Final answer
    x = 16,847,452,459.12

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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.