Home / 28,342.13-39,112.13-15,766.88

Finding the Fourth Proportional to 28,342.13, 39,112.13 and 15,766.88

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Solution

The fourth proportional to 28,342.13, 39,112.13 and 15,766.88 is: 21,758.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,342.13 : 39,112.13 = 15,766.88 : x
  2. Step 2: Convert to fraction form
    28,342.13/39,112.13 = 15,766.88/x
  3. Step 3: Cross multiply
    28,342.13x = 39,112.13 × 15,766.88
  4. Step 4: Simplify right side
    28,342.13x = 616,676,104.11
  5. Step 5: Solve for x
    x = 616,676,104.11/28,342.13
  6. Step 6: Final answer
    x = 21,758.29

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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.