Home / 20,876.88-31,462.11-18,799.24

Finding the Fourth Proportional to 20,876.88, 31,462.11 and 18,799.24

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Solution

The fourth proportional to 20,876.88, 31,462.11 and 18,799.24 is: 28,331.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,876.88 : 31,462.11 = 18,799.24 : x
  2. Step 2: Convert to fraction form
    20,876.88/31,462.11 = 18,799.24/x
  3. Step 3: Cross multiply
    20,876.88x = 31,462.11 × 18,799.24
  4. Step 4: Simplify right side
    20,876.88x = 591,463,756.80
  5. Step 5: Solve for x
    x = 591,463,756.80/20,876.88
  6. Step 6: Final answer
    x = 28,331.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.