Home / 25,455.31-38,188.49-10,656.61

Finding the Fourth Proportional to 25,455.31, 38,188.49 and 10,656.61

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Solution

The fourth proportional to 25,455.31, 38,188.49 and 10,656.61 is: 15,987.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,455.31 : 38,188.49 = 10,656.61 : x
  2. Step 2: Convert to fraction form
    25,455.31/38,188.49 = 10,656.61/x
  3. Step 3: Cross multiply
    25,455.31x = 38,188.49 × 10,656.61
  4. Step 4: Simplify right side
    25,455.31x = 406,959,791.14
  5. Step 5: Solve for x
    x = 406,959,791.14/25,455.31
  6. Step 6: Final answer
    x = 15,987.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.