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Finding the Fourth Proportional to 18,842.52, 28,264.32 and 4,991.52

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Solution

The fourth proportional to 18,842.52, 28,264.32 and 4,991.52 is: 7,487.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,842.52 : 28,264.32 = 4,991.52 : x
  2. Step 2: Convert to fraction form
    18,842.52/28,264.32 = 4,991.52/x
  3. Step 3: Cross multiply
    18,842.52x = 28,264.32 × 4,991.52
  4. Step 4: Simplify right side
    18,842.52x = 141,081,918.57
  5. Step 5: Solve for x
    x = 141,081,918.57/18,842.52
  6. Step 6: Final answer
    x = 7,487.42

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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.