Home / 20,767.56-28,659.15-11,336.13

Finding the Fourth Proportional to 20,767.56, 28,659.15 and 11,336.13

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Solution

The fourth proportional to 20,767.56, 28,659.15 and 11,336.13 is: 15,643.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,767.56 : 28,659.15 = 11,336.13 : x
  2. Step 2: Convert to fraction form
    20,767.56/28,659.15 = 11,336.13/x
  3. Step 3: Cross multiply
    20,767.56x = 28,659.15 × 11,336.13
  4. Step 4: Simplify right side
    20,767.56x = 324,883,850.09
  5. Step 5: Solve for x
    x = 324,883,850.09/20,767.56
  6. Step 6: Final answer
    x = 15,643.81

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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.