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Finding the Fourth Proportional to 18,391.20, 27,598.20 and 9,632.40

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Solution

The fourth proportional to 18,391.20, 27,598.20 and 9,632.40 is: 14,454.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,391.20 : 27,598.20 = 9,632.40 : x
  2. Step 2: Convert to fraction form
    18,391.20/27,598.20 = 9,632.40/x
  3. Step 3: Cross multiply
    18,391.20x = 27,598.20 × 9,632.40
  4. Step 4: Simplify right side
    18,391.20x = 265,836,901.68
  5. Step 5: Solve for x
    x = 265,836,901.68/18,391.20
  6. Step 6: Final answer
    x = 14,454.57

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.