Home / 20,170.40-27,834.45-11,217.72

Finding the Fourth Proportional to 20,170.40, 27,834.45 and 11,217.72

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Solution

The fourth proportional to 20,170.40, 27,834.45 and 11,217.72 is: 15,480.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,170.40 : 27,834.45 = 11,217.72 : x
  2. Step 2: Convert to fraction form
    20,170.40/27,834.45 = 11,217.72/x
  3. Step 3: Cross multiply
    20,170.40x = 27,834.45 × 11,217.72
  4. Step 4: Simplify right side
    20,170.40x = 312,239,066.45
  5. Step 5: Solve for x
    x = 312,239,066.45/20,170.40
  6. Step 6: Final answer
    x = 15,480.07

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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.