Home / 19,808.30-27,336.20-11,311.80

Finding the Fourth Proportional to 19,808.30, 27,336.20 and 11,311.80

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Solution

The fourth proportional to 19,808.30, 27,336.20 and 11,311.80 is: 15,610.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,808.30 : 27,336.20 = 11,311.80 : x
  2. Step 2: Convert to fraction form
    19,808.30/27,336.20 = 11,311.80/x
  3. Step 3: Cross multiply
    19,808.30x = 27,336.20 × 11,311.80
  4. Step 4: Simplify right side
    19,808.30x = 309,221,627.16
  5. Step 5: Solve for x
    x = 309,221,627.16/19,808.30
  6. Step 6: Final answer
    x = 15,610.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.