Home / 20,194.20-30,291.30-10,330.20

Finding the Fourth Proportional to 20,194.20, 30,291.30 and 10,330.20

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Solution

The fourth proportional to 20,194.20, 30,291.30 and 10,330.20 is: 15,495.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,194.20 : 30,291.30 = 10,330.20 : x
  2. Step 2: Convert to fraction form
    20,194.20/30,291.30 = 10,330.20/x
  3. Step 3: Cross multiply
    20,194.20x = 30,291.30 × 10,330.20
  4. Step 4: Simplify right side
    20,194.20x = 312,915,187.26
  5. Step 5: Solve for x
    x = 312,915,187.26/20,194.20
  6. Step 6: Final answer
    x = 15,495.30

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Half 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.