Home / 11,798.20-17,697.30-8,111.80

Finding the Fourth Proportional to 11,798.20, 17,697.30 and 8,111.80

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Solution

The fourth proportional to 11,798.20, 17,697.30 and 8,111.80 is: 12,167.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,798.20 : 17,697.30 = 8,111.80 : x
  2. Step 2: Convert to fraction form
    11,798.20/17,697.30 = 8,111.80/x
  3. Step 3: Cross multiply
    11,798.20x = 17,697.30 × 8,111.80
  4. Step 4: Simplify right side
    11,798.20x = 143,556,958.14
  5. Step 5: Solve for x
    x = 143,556,958.14/11,798.20
  6. Step 6: Final answer
    x = 12,167.70

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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.