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Finding the Fourth Proportional to 18,727.82, 28,082.05 and 6,878.56

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Solution

The fourth proportional to 18,727.82, 28,082.05 and 6,878.56 is: 10,314.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,727.82 : 28,082.05 = 6,878.56 : x
  2. Step 2: Convert to fraction form
    18,727.82/28,082.05 = 6,878.56/x
  3. Step 3: Cross multiply
    18,727.82x = 28,082.05 × 6,878.56
  4. Step 4: Simplify right side
    18,727.82x = 193,164,065.85
  5. Step 5: Solve for x
    x = 193,164,065.85/18,727.82
  6. Step 6: Final answer
    x = 10,314.28

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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.