Home / 20,644,809.38-28,489,947.72-11,352,978.62

Finding the Fourth Proportional to 20,644,809.38, 28,489,947.72 and 11,352,978.62

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Solution

The fourth proportional to 20,644,809.38, 28,489,947.72 and 11,352,978.62 is: 15,667,171.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,644,809.38 : 28,489,947.72 = 11,352,978.62 : x
  2. Step 2: Convert to fraction form
    20,644,809.38/28,489,947.72 = 11,352,978.62/x
  3. Step 3: Cross multiply
    20,644,809.38x = 28,489,947.72 × 11,352,978.62
  4. Step 4: Simplify right side
    20,644,809.38x = 323,445,767,350,077.69
  5. Step 5: Solve for x
    x = 323,445,767,350,077.69/20,644,809.38
  6. Step 6: Final answer
    x = 15,667,171.41

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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.