Home / 20,224.40-27,910.20-11,271.44

Finding the Fourth Proportional to 20,224.40, 27,910.20 and 11,271.44

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Solution

The fourth proportional to 20,224.40, 27,910.20 and 11,271.44 is: 15,554.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,224.40 : 27,910.20 = 11,271.44 : x
  2. Step 2: Convert to fraction form
    20,224.40/27,910.20 = 11,271.44/x
  3. Step 3: Cross multiply
    20,224.40x = 27,910.20 × 11,271.44
  4. Step 4: Simplify right side
    20,224.40x = 314,588,144.69
  5. Step 5: Solve for x
    x = 314,588,144.69/20,224.40
  6. Step 6: Final answer
    x = 15,554.88

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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.