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Finding the Fourth Proportional to 18,191.79, 27,294.17 and 7,797.87

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Solution

The fourth proportional to 18,191.79, 27,294.17 and 7,797.87 is: 11,699.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,191.79 : 27,294.17 = 7,797.87 : x
  2. Step 2: Convert to fraction form
    18,191.79/27,294.17 = 7,797.87/x
  3. Step 3: Cross multiply
    18,191.79x = 27,294.17 × 7,797.87
  4. Step 4: Simplify right side
    18,191.79x = 212,836,350.43
  5. Step 5: Solve for x
    x = 212,836,350.43/18,191.79
  6. Step 6: Final answer
    x = 11,699.58

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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.