Home / 20,217.70-27,904.98-13,131.82

Finding the Fourth Proportional to 20,217.70, 27,904.98 and 13,131.82

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Solution

The fourth proportional to 20,217.70, 27,904.98 and 13,131.82 is: 18,124.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,217.70 : 27,904.98 = 13,131.82 : x
  2. Step 2: Convert to fraction form
    20,217.70/27,904.98 = 13,131.82/x
  3. Step 3: Cross multiply
    20,217.70x = 27,904.98 × 13,131.82
  4. Step 4: Simplify right side
    20,217.70x = 366,443,174.46
  5. Step 5: Solve for x
    x = 366,443,174.46/20,217.70
  6. Step 6: Final answer
    x = 18,124.87

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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.