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Finding the Fourth Proportional to 18,572.32, 27,861.28 and 6,728.88

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Solution

The fourth proportional to 18,572.32, 27,861.28 and 6,728.88 is: 10,094.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,572.32 : 27,861.28 = 6,728.88 : x
  2. Step 2: Convert to fraction form
    18,572.32/27,861.28 = 6,728.88/x
  3. Step 3: Cross multiply
    18,572.32x = 27,861.28 × 6,728.88
  4. Step 4: Simplify right side
    18,572.32x = 187,475,209.77
  5. Step 5: Solve for x
    x = 187,475,209.77/18,572.32
  6. Step 6: Final answer
    x = 10,094.33

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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.