Home / 28,276.20-42,414.30-25,813.80

Finding the Fourth Proportional to 28,276.20, 42,414.30 and 25,813.80

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Solution

The fourth proportional to 28,276.20, 42,414.30 and 25,813.80 is: 38,720.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,276.20 : 42,414.30 = 25,813.80 : x
  2. Step 2: Convert to fraction form
    28,276.20/42,414.30 = 25,813.80/x
  3. Step 3: Cross multiply
    28,276.20x = 42,414.30 × 25,813.80
  4. Step 4: Simplify right side
    28,276.20x = 1,094,874,257.34
  5. Step 5: Solve for x
    x = 1,094,874,257.34/28,276.20
  6. Step 6: Final answer
    x = 38,720.70

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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.