Home / 20,174.20-30,261.30-11,426.20

Finding the Fourth Proportional to 20,174.20, 30,261.30 and 11,426.20

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Solution

The fourth proportional to 20,174.20, 30,261.30 and 11,426.20 is: 17,139.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,174.20 : 30,261.30 = 11,426.20 : x
  2. Step 2: Convert to fraction form
    20,174.20/30,261.30 = 11,426.20/x
  3. Step 3: Cross multiply
    20,174.20x = 30,261.30 × 11,426.20
  4. Step 4: Simplify right side
    20,174.20x = 345,771,666.06
  5. Step 5: Solve for x
    x = 345,771,666.06/20,174.20
  6. Step 6: Final answer
    x = 17,139.30

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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.