Home / 20,626.20-30,939.30-7,474.23

Finding the Fourth Proportional to 20,626.20, 30,939.30 and 7,474.23

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Solution

The fourth proportional to 20,626.20, 30,939.30 and 7,474.23 is: 11,211.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,626.20 : 30,939.30 = 7,474.23 : x
  2. Step 2: Convert to fraction form
    20,626.20/30,939.30 = 7,474.23/x
  3. Step 3: Cross multiply
    20,626.20x = 30,939.30 × 7,474.23
  4. Step 4: Simplify right side
    20,626.20x = 231,247,444.24
  5. Step 5: Solve for x
    x = 231,247,444.24/20,626.20
  6. Step 6: Final answer
    x = 11,211.35

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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.