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Finding the Fourth Proportional to 18,887.52, 28,325.52 and 5,034.72

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Solution

The fourth proportional to 18,887.52, 28,325.52 and 5,034.72 is: 7,550.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,887.52 : 28,325.52 = 5,034.72 : x
  2. Step 2: Convert to fraction form
    18,887.52/28,325.52 = 5,034.72/x
  3. Step 3: Cross multiply
    18,887.52x = 28,325.52 × 5,034.72
  4. Step 4: Simplify right side
    18,887.52x = 142,611,062.05
  5. Step 5: Solve for x
    x = 142,611,062.05/18,887.52
  6. Step 6: Final answer
    x = 7,550.54

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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.