Home / 28,967.40-39,974.82-16,391.88

Finding the Fourth Proportional to 28,967.40, 39,974.82 and 16,391.88

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Solution

The fourth proportional to 28,967.40, 39,974.82 and 16,391.88 is: 22,620.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,967.40 : 39,974.82 = 16,391.88 : x
  2. Step 2: Convert to fraction form
    28,967.40/39,974.82 = 16,391.88/x
  3. Step 3: Cross multiply
    28,967.40x = 39,974.82 × 16,391.88
  4. Step 4: Simplify right side
    28,967.40x = 655,262,452.46
  5. Step 5: Solve for x
    x = 655,262,452.46/28,967.40
  6. Step 6: Final answer
    x = 22,620.69

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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.