Home / 26,343.78-39,515.40-6,621.90

Finding the Fourth Proportional to 26,343.78, 39,515.40 and 6,621.90

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Solution

The fourth proportional to 26,343.78, 39,515.40 and 6,621.90 is: 9,932.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,343.78 : 39,515.40 = 6,621.90 : x
  2. Step 2: Convert to fraction form
    26,343.78/39,515.40 = 6,621.90/x
  3. Step 3: Cross multiply
    26,343.78x = 39,515.40 × 6,621.90
  4. Step 4: Simplify right side
    26,343.78x = 261,667,027.26
  5. Step 5: Solve for x
    x = 261,667,027.26/26,343.78
  6. Step 6: Final answer
    x = 9,932.78

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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.