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Finding the Fourth Proportional to 18,188.61, 27,287.36 and 6,340.74

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Solution

The fourth proportional to 18,188.61, 27,287.36 and 6,340.74 is: 9,512.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,188.61 : 27,287.36 = 6,340.74 : x
  2. Step 2: Convert to fraction form
    18,188.61/27,287.36 = 6,340.74/x
  3. Step 3: Cross multiply
    18,188.61x = 27,287.36 × 6,340.74
  4. Step 4: Simplify right side
    18,188.61x = 173,022,055.05
  5. Step 5: Solve for x
    x = 173,022,055.05/18,188.61
  6. Step 6: Final answer
    x = 9,512.66

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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.