Home / 26,422.80-39,586.20-20,912.40

Finding the Fourth Proportional to 26,422.80, 39,586.20 and 20,912.40

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Solution

The fourth proportional to 26,422.80, 39,586.20 and 20,912.40 is: 31,330.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,422.80 : 39,586.20 = 20,912.40 : x
  2. Step 2: Convert to fraction form
    26,422.80/39,586.20 = 20,912.40/x
  3. Step 3: Cross multiply
    26,422.80x = 39,586.20 × 20,912.40
  4. Step 4: Simplify right side
    26,422.80x = 827,842,448.88
  5. Step 5: Solve for x
    x = 827,842,448.88/26,422.80
  6. Step 6: Final answer
    x = 31,330.61

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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.