Home / 13,279.91-19,910.10-8,016.80

Finding the Fourth Proportional to 13,279.91, 19,910.10 and 8,016.80

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Solution

The fourth proportional to 13,279.91, 19,910.10 and 8,016.80 is: 12,019.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,279.91 : 19,910.10 = 8,016.80 : x
  2. Step 2: Convert to fraction form
    13,279.91/19,910.10 = 8,016.80/x
  3. Step 3: Cross multiply
    13,279.91x = 19,910.10 × 8,016.80
  4. Step 4: Simplify right side
    13,279.91x = 159,615,289.68
  5. Step 5: Solve for x
    x = 159,615,289.68/13,279.91
  6. Step 6: Final answer
    x = 12,019.31

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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.