Home / 20,438,778.42-30,659,938.29-7,488,446.58

Finding the Fourth Proportional to 20,438,778.42, 30,659,938.29 and 7,488,446.58

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Solution

The fourth proportional to 20,438,778.42, 30,659,938.29 and 7,488,446.58 is: 11,233,318.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,438,778.42 : 30,659,938.29 = 7,488,446.58 : x
  2. Step 2: Convert to fraction form
    20,438,778.42/30,659,938.29 = 7,488,446.58/x
  3. Step 3: Cross multiply
    20,438,778.42x = 30,659,938.29 × 7,488,446.58
  4. Step 4: Simplify right side
    20,438,778.42x = 229,595,310,030,761.53
  5. Step 5: Solve for x
    x = 229,595,310,030,761.53/20,438,778.42
  6. Step 6: Final answer
    x = 11,233,318.61

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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.