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Finding the Fourth Proportional to 10,168.40, 15,238 and 5,776.56

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Solution

The fourth proportional to 10,168.40, 15,238 and 5,776.56 is: 8,656.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,168.40 : 15,238 = 5,776.56 : x
  2. Step 2: Convert to fraction form
    10,168.40/15,238 = 5,776.56/x
  3. Step 3: Cross multiply
    10,168.40x = 15,238 × 5,776.56
  4. Step 4: Simplify right side
    10,168.40x = 88,023,221.28
  5. Step 5: Solve for x
    x = 88,023,221.28/10,168.40
  6. Step 6: Final answer
    x = 8,656.55

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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.