Home / 19,798.20-29,697.30-8,119.80

Finding the Fourth Proportional to 19,798.20, 29,697.30 and 8,119.80

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Solution

The fourth proportional to 19,798.20, 29,697.30 and 8,119.80 is: 12,179.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,798.20 : 29,697.30 = 8,119.80 : x
  2. Step 2: Convert to fraction form
    19,798.20/29,697.30 = 8,119.80/x
  3. Step 3: Cross multiply
    19,798.20x = 29,697.30 × 8,119.80
  4. Step 4: Simplify right side
    19,798.20x = 241,136,136.54
  5. Step 5: Solve for x
    x = 241,136,136.54/19,798.20
  6. Step 6: Final answer
    x = 12,179.70

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Double scale
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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.