Home / 28,181.22-38,891.31-15,605.97

Finding the Fourth Proportional to 28,181.22, 38,891.31 and 15,605.97

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Solution

The fourth proportional to 28,181.22, 38,891.31 and 15,605.97 is: 21,536.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,181.22 : 38,891.31 = 15,605.97 : x
  2. Step 2: Convert to fraction form
    28,181.22/38,891.31 = 15,605.97/x
  3. Step 3: Cross multiply
    28,181.22x = 38,891.31 × 15,605.97
  4. Step 4: Simplify right side
    28,181.22x = 606,936,617.12
  5. Step 5: Solve for x
    x = 606,936,617.12/28,181.22
  6. Step 6: Final answer
    x = 21,536.92

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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.