Home / 20,275-27,979.19-11,322.64

Finding the Fourth Proportional to 20,275, 27,979.19 and 11,322.64

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Solution

The fourth proportional to 20,275, 27,979.19 and 11,322.64 is: 15,625.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,275 : 27,979.19 = 11,322.64 : x
  2. Step 2: Convert to fraction form
    20,275/27,979.19 = 11,322.64/x
  3. Step 3: Cross multiply
    20,275x = 27,979.19 × 11,322.64
  4. Step 4: Simplify right side
    20,275x = 316,798,155.97
  5. Step 5: Solve for x
    x = 316,798,155.97/20,275
  6. Step 6: Final answer
    x = 15,625.06

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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.