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Finding the Fourth Proportional to 18,627.32, 27,921.54 and 6,935.78

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Solution

The fourth proportional to 18,627.32, 27,921.54 and 6,935.78 is: 10,396.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,627.32 : 27,921.54 = 6,935.78 : x
  2. Step 2: Convert to fraction form
    18,627.32/27,921.54 = 6,935.78/x
  3. Step 3: Cross multiply
    18,627.32x = 27,921.54 × 6,935.78
  4. Step 4: Simplify right side
    18,627.32x = 193,657,658.70
  5. Step 5: Solve for x
    x = 193,657,658.70/18,627.32
  6. Step 6: Final answer
    x = 10,396.43

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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.