Home / 25,291.80-34,856.13-20,272.62

Finding the Fourth Proportional to 25,291.80, 34,856.13 and 20,272.62

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Solution

The fourth proportional to 25,291.80, 34,856.13 and 20,272.62 is: 27,938.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,291.80 : 34,856.13 = 20,272.62 : x
  2. Step 2: Convert to fraction form
    25,291.80/34,856.13 = 20,272.62/x
  3. Step 3: Cross multiply
    25,291.80x = 34,856.13 × 20,272.62
  4. Step 4: Simplify right side
    25,291.80x = 706,625,078.16
  5. Step 5: Solve for x
    x = 706,625,078.16/25,291.80
  6. Step 6: Final answer
    x = 27,938.90

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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.