Home / 18,721,921.10-28,082,881.65-15,530,650.70

Finding the Fourth Proportional to 18,721,921.10, 28,082,881.65 and 15,530,650.70

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Solution

The fourth proportional to 18,721,921.10, 28,082,881.65 and 15,530,650.70 is: 23,295,976.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,721,921.10 : 28,082,881.65 = 15,530,650.70 : x
  2. Step 2: Convert to fraction form
    18,721,921.10/28,082,881.65 = 15,530,650.70/x
  3. Step 3: Cross multiply
    18,721,921.10x = 28,082,881.65 × 15,530,650.70
  4. Step 4: Simplify right side
    18,721,921.10x = 436,145,425,555,589.62
  5. Step 5: Solve for x
    x = 436,145,425,555,589.62/18,721,921.10
  6. Step 6: Final answer
    x = 23,295,976.05

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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.