Home / 26,278.62-39,348.93-20,989.26

Finding the Fourth Proportional to 26,278.62, 39,348.93 and 20,989.26

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Solution

The fourth proportional to 26,278.62, 39,348.93 and 20,989.26 is: 31,428.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,278.62 : 39,348.93 = 20,989.26 : x
  2. Step 2: Convert to fraction form
    26,278.62/39,348.93 = 20,989.26/x
  3. Step 3: Cross multiply
    26,278.62x = 39,348.93 × 20,989.26
  4. Step 4: Simplify right side
    26,278.62x = 825,904,922.49
  5. Step 5: Solve for x
    x = 825,904,922.49/26,278.62
  6. Step 6: Final answer
    x = 31,428.78

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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.