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Finding the Fourth Proportional to 18,254.67, 25,191.44 and 9,871.17

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Solution

The fourth proportional to 18,254.67, 25,191.44 and 9,871.17 is: 13,622.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,254.67 : 25,191.44 = 9,871.17 : x
  2. Step 2: Convert to fraction form
    18,254.67/25,191.44 = 9,871.17/x
  3. Step 3: Cross multiply
    18,254.67x = 25,191.44 × 9,871.17
  4. Step 4: Simplify right side
    18,254.67x = 248,668,937.43
  5. Step 5: Solve for x
    x = 248,668,937.43/18,254.67
  6. Step 6: Final answer
    x = 13,622.21

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