Home / 20,170.70-27,835.08-11,217.86

Finding the Fourth Proportional to 20,170.70, 27,835.08 and 11,217.86

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Solution

The fourth proportional to 20,170.70, 27,835.08 and 11,217.86 is: 15,480.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,170.70 : 27,835.08 = 11,217.86 : x
  2. Step 2: Convert to fraction form
    20,170.70/27,835.08 = 11,217.86/x
  3. Step 3: Cross multiply
    20,170.70x = 27,835.08 × 11,217.86
  4. Step 4: Simplify right side
    20,170.70x = 312,250,030.53
  5. Step 5: Solve for x
    x = 312,250,030.53/20,170.70
  6. Step 6: Final answer
    x = 15,480.38

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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.