Home / 20,788,749.42-31,175,357.84-7,138,020.30

Finding the Fourth Proportional to 20,788,749.42, 31,175,357.84 and 7,138,020.30

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Solution

The fourth proportional to 20,788,749.42, 31,175,357.84 and 7,138,020.30 is: 10,704,363.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,788,749.42 : 31,175,357.84 = 7,138,020.30 : x
  2. Step 2: Convert to fraction form
    20,788,749.42/31,175,357.84 = 7,138,020.30/x
  3. Step 3: Cross multiply
    20,788,749.42x = 31,175,357.84 × 7,138,020.30
  4. Step 4: Simplify right side
    20,788,749.42x = 222,530,337,121,684.16
  5. Step 5: Solve for x
    x = 222,530,337,121,684.16/20,788,749.42
  6. Step 6: Final answer
    x = 10,704,363.82

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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.