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Finding the Fourth Proportional to 18,168.24, 27,243.88 and 6,478.72

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Solution

The fourth proportional to 18,168.24, 27,243.88 and 6,478.72 is: 9,715.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,168.24 : 27,243.88 = 6,478.72 : x
  2. Step 2: Convert to fraction form
    18,168.24/27,243.88 = 6,478.72/x
  3. Step 3: Cross multiply
    18,168.24x = 27,243.88 × 6,478.72
  4. Step 4: Simplify right side
    18,168.24x = 176,505,470.23
  5. Step 5: Solve for x
    x = 176,505,470.23/18,168.24
  6. Step 6: Final answer
    x = 9,715.06

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1.5x scale

Why These Related Problems?

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