Home / 28,217.26-38,938.30-16,279.88

Finding the Fourth Proportional to 28,217.26, 38,938.30 and 16,279.88

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Solution

The fourth proportional to 28,217.26, 38,938.30 and 16,279.88 is: 22,465.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,217.26 : 38,938.30 = 16,279.88 : x
  2. Step 2: Convert to fraction form
    28,217.26/38,938.30 = 16,279.88/x
  3. Step 3: Cross multiply
    28,217.26x = 38,938.30 × 16,279.88
  4. Step 4: Simplify right side
    28,217.26x = 633,910,851.40
  5. Step 5: Solve for x
    x = 633,910,851.40/28,217.26
  6. Step 6: Final answer
    x = 22,465.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.