Home / 20,031.20-27,640.62-11,077.46

Finding the Fourth Proportional to 20,031.20, 27,640.62 and 11,077.46

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Solution

The fourth proportional to 20,031.20, 27,640.62 and 11,077.46 is: 15,285.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,031.20 : 27,640.62 = 11,077.46 : x
  2. Step 2: Convert to fraction form
    20,031.20/27,640.62 = 11,077.46/x
  3. Step 3: Cross multiply
    20,031.20x = 27,640.62 × 11,077.46
  4. Step 4: Simplify right side
    20,031.20x = 306,187,862.43
  5. Step 5: Solve for x
    x = 306,187,862.43/20,031.20
  6. Step 6: Final answer
    x = 15,285.55

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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.