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Finding the Fourth Proportional to 23,115.70, 34,673.55 and 20,199.70

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Solution

The fourth proportional to 23,115.70, 34,673.55 and 20,199.70 is: 30,299.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,115.70 : 34,673.55 = 20,199.70 : x
  2. Step 2: Convert to fraction form
    23,115.70/34,673.55 = 20,199.70/x
  3. Step 3: Cross multiply
    23,115.70x = 34,673.55 × 20,199.70
  4. Step 4: Simplify right side
    23,115.70x = 700,395,307.94
  5. Step 5: Solve for x
    x = 700,395,307.94/23,115.70
  6. Step 6: Final answer
    x = 30,299.55

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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.