Home / 20,520,940.43-28,318,460.87-11,228,473.14

Finding the Fourth Proportional to 20,520,940.43, 28,318,460.87 and 11,228,473.14

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Solution

The fourth proportional to 20,520,940.43, 28,318,460.87 and 11,228,473.14 is: 15,495,053.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,520,940.43 : 28,318,460.87 = 11,228,473.14 : x
  2. Step 2: Convert to fraction form
    20,520,940.43/28,318,460.87 = 11,228,473.14/x
  3. Step 3: Cross multiply
    20,520,940.43x = 28,318,460.87 × 11,228,473.14
  4. Step 4: Simplify right side
    20,520,940.43x = 317,973,077,188,793.69
  5. Step 5: Solve for x
    x = 317,973,077,188,793.69/20,520,940.43
  6. Step 6: Final answer
    x = 15,495,053.86

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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.