Home / 20,170.67-27,835.20-11,217.06

Finding the Fourth Proportional to 20,170.67, 27,835.20 and 11,217.06

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Solution

The fourth proportional to 20,170.67, 27,835.20 and 11,217.06 is: 15,479.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,170.67 : 27,835.20 = 11,217.06 : x
  2. Step 2: Convert to fraction form
    20,170.67/27,835.20 = 11,217.06/x
  3. Step 3: Cross multiply
    20,170.67x = 27,835.20 × 11,217.06
  4. Step 4: Simplify right side
    20,170.67x = 312,229,108.51
  5. Step 5: Solve for x
    x = 312,229,108.51/20,170.67
  6. Step 6: Final answer
    x = 15,479.37

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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.