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Finding the Fourth Proportional to 18,879.52, 28,319.38 and 5,732

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Solution

The fourth proportional to 18,879.52, 28,319.38 and 5,732 is: 8,598.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,879.52 : 28,319.38 = 5,732 : x
  2. Step 2: Convert to fraction form
    18,879.52/28,319.38 = 5,732/x
  3. Step 3: Cross multiply
    18,879.52x = 28,319.38 × 5,732
  4. Step 4: Simplify right side
    18,879.52x = 162,326,686.16
  5. Step 5: Solve for x
    x = 162,326,686.16/18,879.52
  6. Step 6: Final answer
    x = 8,598.03

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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.