Home / 15,787,035.78-21,786,109.11-8,543,691.78

Finding the Fourth Proportional to 15,787,035.78, 21,786,109.11 and 8,543,691.78

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Solution

The fourth proportional to 15,787,035.78, 21,786,109.11 and 8,543,691.78 is: 11,790,294.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,787,035.78 : 21,786,109.11 = 8,543,691.78 : x
  2. Step 2: Convert to fraction form
    15,787,035.78/21,786,109.11 = 8,543,691.78/x
  3. Step 3: Cross multiply
    15,787,035.78x = 21,786,109.11 × 8,543,691.78
  4. Step 4: Simplify right side
    15,787,035.78x = 186,133,801,321,290.09
  5. Step 5: Solve for x
    x = 186,133,801,321,290.09/15,787,035.78
  6. Step 6: Final answer
    x = 11,790,294.51

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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.