Home / 26,919.68-40,387.79-13,781.28

Finding the Fourth Proportional to 26,919.68, 40,387.79 and 13,781.28

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Solution

The fourth proportional to 26,919.68, 40,387.79 and 13,781.28 is: 20,676.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,919.68 : 40,387.79 = 13,781.28 : x
  2. Step 2: Convert to fraction form
    26,919.68/40,387.79 = 13,781.28/x
  3. Step 3: Cross multiply
    26,919.68x = 40,387.79 × 13,781.28
  4. Step 4: Simplify right side
    26,919.68x = 556,595,376.05
  5. Step 5: Solve for x
    x = 556,595,376.05/26,919.68
  6. Step 6: Final answer
    x = 20,676.15

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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.