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Finding the Fourth Proportional to 18,191.60, 27,291.86 and 6,343.74

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Solution

The fourth proportional to 18,191.60, 27,291.86 and 6,343.74 is: 9,517.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,191.60 : 27,291.86 = 6,343.74 : x
  2. Step 2: Convert to fraction form
    18,191.60/27,291.86 = 6,343.74/x
  3. Step 3: Cross multiply
    18,191.60x = 27,291.86 × 6,343.74
  4. Step 4: Simplify right side
    18,191.60x = 173,132,463.96
  5. Step 5: Solve for x
    x = 173,132,463.96/18,191.60
  6. Step 6: Final answer
    x = 9,517.17

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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.