Home / 20,105.90-30,158.85-16,849.70

Finding the Fourth Proportional to 20,105.90, 30,158.85 and 16,849.70

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Solution

The fourth proportional to 20,105.90, 30,158.85 and 16,849.70 is: 25,274.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,105.90 : 30,158.85 = 16,849.70 : x
  2. Step 2: Convert to fraction form
    20,105.90/30,158.85 = 16,849.70/x
  3. Step 3: Cross multiply
    20,105.90x = 30,158.85 × 16,849.70
  4. Step 4: Simplify right side
    20,105.90x = 508,167,574.85
  5. Step 5: Solve for x
    x = 508,167,574.85/20,105.90
  6. Step 6: Final answer
    x = 25,274.55

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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.