Home / 20,767.68-28,659.56-11,336.49

Finding the Fourth Proportional to 20,767.68, 28,659.56 and 11,336.49

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Solution

The fourth proportional to 20,767.68, 28,659.56 and 11,336.49 is: 15,644.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,767.68 : 28,659.56 = 11,336.49 : x
  2. Step 2: Convert to fraction form
    20,767.68/28,659.56 = 11,336.49/x
  3. Step 3: Cross multiply
    20,767.68x = 28,659.56 × 11,336.49
  4. Step 4: Simplify right side
    20,767.68x = 324,898,758.66
  5. Step 5: Solve for x
    x = 324,898,758.66/20,767.68
  6. Step 6: Final answer
    x = 15,644.44

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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.