Home / 20,662-31,105.44-18,824.92

Finding the Fourth Proportional to 20,662, 31,105.44 and 18,824.92

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Solution

The fourth proportional to 20,662, 31,105.44 and 18,824.92 is: 28,339.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,662 : 31,105.44 = 18,824.92 : x
  2. Step 2: Convert to fraction form
    20,662/31,105.44 = 18,824.92/x
  3. Step 3: Cross multiply
    20,662x = 31,105.44 × 18,824.92
  4. Step 4: Simplify right side
    20,662x = 585,557,419.56
  5. Step 5: Solve for x
    x = 585,557,419.56/20,662
  6. Step 6: Final answer
    x = 28,339.82

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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.