Home / 20,199.96-27,879.30-11,700.72

Finding the Fourth Proportional to 20,199.96, 27,879.30 and 11,700.72

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Solution

The fourth proportional to 20,199.96, 27,879.30 and 11,700.72 is: 16,148.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,199.96 : 27,879.30 = 11,700.72 : x
  2. Step 2: Convert to fraction form
    20,199.96/27,879.30 = 11,700.72/x
  3. Step 3: Cross multiply
    20,199.96x = 27,879.30 × 11,700.72
  4. Step 4: Simplify right side
    20,199.96x = 326,207,883.10
  5. Step 5: Solve for x
    x = 326,207,883.10/20,199.96
  6. Step 6: Final answer
    x = 16,148.94

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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.