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Finding the Fourth Proportional to 18,294.89, 27,451.55 and 7,209.53

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Solution

The fourth proportional to 18,294.89, 27,451.55 and 7,209.53 is: 10,817.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,294.89 : 27,451.55 = 7,209.53 : x
  2. Step 2: Convert to fraction form
    18,294.89/27,451.55 = 7,209.53/x
  3. Step 3: Cross multiply
    18,294.89x = 27,451.55 × 7,209.53
  4. Step 4: Simplify right side
    18,294.89x = 197,912,859.92
  5. Step 5: Solve for x
    x = 197,912,859.92/18,294.89
  6. Step 6: Final answer
    x = 10,817.93

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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.