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Finding the Fourth Proportional to 18,254.52, 25,191.22 and 9,871

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Solution

The fourth proportional to 18,254.52, 25,191.22 and 9,871 is: 13,621.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,254.52 : 25,191.22 = 9,871 : x
  2. Step 2: Convert to fraction form
    18,254.52/25,191.22 = 9,871/x
  3. Step 3: Cross multiply
    18,254.52x = 25,191.22 × 9,871
  4. Step 4: Simplify right side
    18,254.52x = 248,662,532.62
  5. Step 5: Solve for x
    x = 248,662,532.62/18,254.52
  6. Step 6: Final answer
    x = 13,621.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.