Home / 20,207,829.70-30,311,744.55-12,145,672.90

Finding the Fourth Proportional to 20,207,829.70, 30,311,744.55 and 12,145,672.90

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Solution

The fourth proportional to 20,207,829.70, 30,311,744.55 and 12,145,672.90 is: 18,218,509.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,207,829.70 : 30,311,744.55 = 12,145,672.90 : x
  2. Step 2: Convert to fraction form
    20,207,829.70/30,311,744.55 = 12,145,672.90/x
  3. Step 3: Cross multiply
    20,207,829.70x = 30,311,744.55 × 12,145,672.90
  4. Step 4: Simplify right side
    20,207,829.70x = 368,156,534,332,657.69
  5. Step 5: Solve for x
    x = 368,156,534,332,657.69/20,207,829.70
  6. Step 6: Final answer
    x = 18,218,509.35

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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.