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Finding the Fourth Proportional to 15,104, 20,844.11 and 8,390.14

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Solution

The fourth proportional to 15,104, 20,844.11 and 8,390.14 is: 11,578.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,104 : 20,844.11 = 8,390.14 : x
  2. Step 2: Convert to fraction form
    15,104/20,844.11 = 8,390.14/x
  3. Step 3: Cross multiply
    15,104x = 20,844.11 × 8,390.14
  4. Step 4: Simplify right side
    15,104x = 174,884,854.90
  5. Step 5: Solve for x
    x = 174,884,854.90/15,104
  6. Step 6: Final answer
    x = 11,578.71

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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.