Home / 26,282.88-39,355.20-20,131.20

Finding the Fourth Proportional to 26,282.88, 39,355.20 and 20,131.20

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Solution

The fourth proportional to 26,282.88, 39,355.20 and 20,131.20 is: 30,143.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,282.88 : 39,355.20 = 20,131.20 : x
  2. Step 2: Convert to fraction form
    26,282.88/39,355.20 = 20,131.20/x
  3. Step 3: Cross multiply
    26,282.88x = 39,355.20 × 20,131.20
  4. Step 4: Simplify right side
    26,282.88x = 792,267,402.24
  5. Step 5: Solve for x
    x = 792,267,402.24/26,282.88
  6. Step 6: Final answer
    x = 30,143.86

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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.