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Finding the Fourth Proportional to 18,381.52, 25,366.26 and 9,998.02

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Solution

The fourth proportional to 18,381.52, 25,366.26 and 9,998.02 is: 13,797.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,381.52 : 25,366.26 = 9,998.02 : x
  2. Step 2: Convert to fraction form
    18,381.52/25,366.26 = 9,998.02/x
  3. Step 3: Cross multiply
    18,381.52x = 25,366.26 × 9,998.02
  4. Step 4: Simplify right side
    18,381.52x = 253,612,374.81
  5. Step 5: Solve for x
    x = 253,612,374.81/18,381.52
  6. Step 6: Final answer
    x = 13,797.14

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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.