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Finding the Fourth Proportional to 12,550, 18,810.28 and 5,144.56

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Solution

The fourth proportional to 12,550, 18,810.28 and 5,144.56 is: 7,710.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,550 : 18,810.28 = 5,144.56 : x
  2. Step 2: Convert to fraction form
    12,550/18,810.28 = 5,144.56/x
  3. Step 3: Cross multiply
    12,550x = 18,810.28 × 5,144.56
  4. Step 4: Simplify right side
    12,550x = 96,770,614.08
  5. Step 5: Solve for x
    x = 96,770,614.08/12,550
  6. Step 6: Final answer
    x = 7,710.81

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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.