Home / 25,963.24-35,817.78-20,390.44

Finding the Fourth Proportional to 25,963.24, 35,817.78 and 20,390.44

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Solution

The fourth proportional to 25,963.24, 35,817.78 and 20,390.44 is: 28,129.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,963.24 : 35,817.78 = 20,390.44 : x
  2. Step 2: Convert to fraction form
    25,963.24/35,817.78 = 20,390.44/x
  3. Step 3: Cross multiply
    25,963.24x = 35,817.78 × 20,390.44
  4. Step 4: Simplify right side
    25,963.24x = 730,340,294.02
  5. Step 5: Solve for x
    x = 730,340,294.02/25,963.24
  6. Step 6: Final answer
    x = 28,129.78

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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.