Home / 20,729.43-31,101.57-8,878.23

Finding the Fourth Proportional to 20,729.43, 31,101.57 and 8,878.23

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Solution

The fourth proportional to 20,729.43, 31,101.57 and 8,878.23 is: 13,320.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,729.43 : 31,101.57 = 8,878.23 : x
  2. Step 2: Convert to fraction form
    20,729.43/31,101.57 = 8,878.23/x
  3. Step 3: Cross multiply
    20,729.43x = 31,101.57 × 8,878.23
  4. Step 4: Simplify right side
    20,729.43x = 276,126,891.82
  5. Step 5: Solve for x
    x = 276,126,891.82/20,729.43
  6. Step 6: Final answer
    x = 13,320.53

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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.