Home / 20,217.38-27,917.18-12,676.34

Finding the Fourth Proportional to 20,217.38, 27,917.18 and 12,676.34

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Solution

The fourth proportional to 20,217.38, 27,917.18 and 12,676.34 is: 17,504.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,217.38 : 27,917.18 = 12,676.34 : x
  2. Step 2: Convert to fraction form
    20,217.38/27,917.18 = 12,676.34/x
  3. Step 3: Cross multiply
    20,217.38x = 27,917.18 × 12,676.34
  4. Step 4: Simplify right side
    20,217.38x = 353,887,462.55
  5. Step 5: Solve for x
    x = 353,887,462.55/20,217.38
  6. Step 6: Final answer
    x = 17,504.13

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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.