Home / 20,168.92-30,253.38-8,490.34

Finding the Fourth Proportional to 20,168.92, 30,253.38 and 8,490.34

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Solution

The fourth proportional to 20,168.92, 30,253.38 and 8,490.34 is: 12,735.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,168.92 : 30,253.38 = 8,490.34 : x
  2. Step 2: Convert to fraction form
    20,168.92/30,253.38 = 8,490.34/x
  3. Step 3: Cross multiply
    20,168.92x = 30,253.38 × 8,490.34
  4. Step 4: Simplify right side
    20,168.92x = 256,861,482.35
  5. Step 5: Solve for x
    x = 256,861,482.35/20,168.92
  6. Step 6: Final answer
    x = 12,735.51

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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.