Home / 28,636.14-39,517.82-15,891.28

Finding the Fourth Proportional to 28,636.14, 39,517.82 and 15,891.28

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Solution

The fourth proportional to 28,636.14, 39,517.82 and 15,891.28 is: 21,929.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,636.14 : 39,517.82 = 15,891.28 : x
  2. Step 2: Convert to fraction form
    28,636.14/39,517.82 = 15,891.28/x
  3. Step 3: Cross multiply
    28,636.14x = 39,517.82 × 15,891.28
  4. Step 4: Simplify right side
    28,636.14x = 627,988,742.61
  5. Step 5: Solve for x
    x = 627,988,742.61/28,636.14
  6. Step 6: Final answer
    x = 21,929.94

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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.