Home / 25,520.20-38,280.30-7,995.40

Finding the Fourth Proportional to 25,520.20, 38,280.30 and 7,995.40

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Solution

The fourth proportional to 25,520.20, 38,280.30 and 7,995.40 is: 11,993.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,520.20 : 38,280.30 = 7,995.40 : x
  2. Step 2: Convert to fraction form
    25,520.20/38,280.30 = 7,995.40/x
  3. Step 3: Cross multiply
    25,520.20x = 38,280.30 × 7,995.40
  4. Step 4: Simplify right side
    25,520.20x = 306,066,310.62
  5. Step 5: Solve for x
    x = 306,066,310.62/25,520.20
  6. Step 6: Final answer
    x = 11,993.10

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Half scale
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Double scale
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Similar ratio
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1.5x scale

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.