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Finding the Fourth Proportional to 18,501.12, 25,531.92 and 10,118.16

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Solution

The fourth proportional to 18,501.12, 25,531.92 and 10,118.16 is: 13,963.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,501.12 : 25,531.92 = 10,118.16 : x
  2. Step 2: Convert to fraction form
    18,501.12/25,531.92 = 10,118.16/x
  3. Step 3: Cross multiply
    18,501.12x = 25,531.92 × 10,118.16
  4. Step 4: Simplify right side
    18,501.12x = 258,336,051.67
  5. Step 5: Solve for x
    x = 258,336,051.67/18,501.12
  6. Step 6: Final answer
    x = 13,963.27

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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.