Home / 25,087.90-34,613.40-15,661.92

Finding the Fourth Proportional to 25,087.90, 34,613.40 and 15,661.92

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Solution

The fourth proportional to 25,087.90, 34,613.40 and 15,661.92 is: 21,608.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,087.90 : 34,613.40 = 15,661.92 : x
  2. Step 2: Convert to fraction form
    25,087.90/34,613.40 = 15,661.92/x
  3. Step 3: Cross multiply
    25,087.90x = 34,613.40 × 15,661.92
  4. Step 4: Simplify right side
    25,087.90x = 542,112,301.73
  5. Step 5: Solve for x
    x = 542,112,301.73/25,087.90
  6. Step 6: Final answer
    x = 21,608.52

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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.