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Finding the Fourth Proportional to 20,193.70, 30,290.55 and 10,329.70

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Solution

The fourth proportional to 20,193.70, 30,290.55 and 10,329.70 is: 15,494.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,193.70 : 30,290.55 = 10,329.70 : x
  2. Step 2: Convert to fraction form
    20,193.70/30,290.55 = 10,329.70/x
  3. Step 3: Cross multiply
    20,193.70x = 30,290.55 × 10,329.70
  4. Step 4: Simplify right side
    20,193.70x = 312,892,294.34
  5. Step 5: Solve for x
    x = 312,892,294.34/20,193.70
  6. Step 6: Final answer
    x = 15,494.55

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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.