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Finding the Fourth Proportional to 18,372.93, 25,354.18 and 10,415.16

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Solution

The fourth proportional to 18,372.93, 25,354.18 and 10,415.16 is: 14,372.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,372.93 : 25,354.18 = 10,415.16 : x
  2. Step 2: Convert to fraction form
    18,372.93/25,354.18 = 10,415.16/x
  3. Step 3: Cross multiply
    18,372.93x = 25,354.18 × 10,415.16
  4. Step 4: Simplify right side
    18,372.93x = 264,067,714.60
  5. Step 5: Solve for x
    x = 264,067,714.60/18,372.93
  6. Step 6: Final answer
    x = 14,372.65

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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.