Home / 28,480.97-39,307.13-20,929.88

Finding the Fourth Proportional to 28,480.97, 39,307.13 and 20,929.88

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Solution

The fourth proportional to 28,480.97, 39,307.13 and 20,929.88 is: 28,885.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,480.97 : 39,307.13 = 20,929.88 : x
  2. Step 2: Convert to fraction form
    28,480.97/39,307.13 = 20,929.88/x
  3. Step 3: Cross multiply
    28,480.97x = 39,307.13 × 20,929.88
  4. Step 4: Simplify right side
    28,480.97x = 822,693,514.04
  5. Step 5: Solve for x
    x = 822,693,514.04/28,480.97
  6. Step 6: Final answer
    x = 28,885.73

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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.