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Finding the Fourth Proportional to 18,872.82, 26,047.17 and 10,919.70

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Solution

The fourth proportional to 18,872.82, 26,047.17 and 10,919.70 is: 15,070.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,872.82 : 26,047.17 = 10,919.70 : x
  2. Step 2: Convert to fraction form
    18,872.82/26,047.17 = 10,919.70/x
  3. Step 3: Cross multiply
    18,872.82x = 26,047.17 × 10,919.70
  4. Step 4: Simplify right side
    18,872.82x = 284,427,282.25
  5. Step 5: Solve for x
    x = 284,427,282.25/18,872.82
  6. Step 6: Final answer
    x = 15,070.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.