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Finding the Fourth Proportional to 18,520.56, 27,781.02 and 7,277.04

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Solution

The fourth proportional to 18,520.56, 27,781.02 and 7,277.04 is: 10,915.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,520.56 : 27,781.02 = 7,277.04 : x
  2. Step 2: Convert to fraction form
    18,520.56/27,781.02 = 7,277.04/x
  3. Step 3: Cross multiply
    18,520.56x = 27,781.02 × 7,277.04
  4. Step 4: Simplify right side
    18,520.56x = 202,163,593.78
  5. Step 5: Solve for x
    x = 202,163,593.78/18,520.56
  6. Step 6: Final answer
    x = 10,915.63

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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.