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Finding the Fourth Proportional to 18,424.32, 25,420.80 and 10,967.04

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Solution

The fourth proportional to 18,424.32, 25,420.80 and 10,967.04 is: 15,131.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,424.32 : 25,420.80 = 10,967.04 : x
  2. Step 2: Convert to fraction form
    18,424.32/25,420.80 = 10,967.04/x
  3. Step 3: Cross multiply
    18,424.32x = 25,420.80 × 10,967.04
  4. Step 4: Simplify right side
    18,424.32x = 278,790,930.43
  5. Step 5: Solve for x
    x = 278,790,930.43/18,424.32
  6. Step 6: Final answer
    x = 15,131.68

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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.