Home / 20,165.90-27,818.28-11,984.87

Finding the Fourth Proportional to 20,165.90, 27,818.28 and 11,984.87

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Solution

The fourth proportional to 20,165.90, 27,818.28 and 11,984.87 is: 16,532.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,165.90 : 27,818.28 = 11,984.87 : x
  2. Step 2: Convert to fraction form
    20,165.90/27,818.28 = 11,984.87/x
  3. Step 3: Cross multiply
    20,165.90x = 27,818.28 × 11,984.87
  4. Step 4: Simplify right side
    20,165.90x = 333,398,469.42
  5. Step 5: Solve for x
    x = 333,398,469.42/20,165.90
  6. Step 6: Final answer
    x = 16,532.78

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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.