Home / 20,221.71-27,903.45-11,268.57

Finding the Fourth Proportional to 20,221.71, 27,903.45 and 11,268.57

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Solution

The fourth proportional to 20,221.71, 27,903.45 and 11,268.57 is: 15,549.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,221.71 : 27,903.45 = 11,268.57 : x
  2. Step 2: Convert to fraction form
    20,221.71/27,903.45 = 11,268.57/x
  3. Step 3: Cross multiply
    20,221.71x = 27,903.45 × 11,268.57
  4. Step 4: Simplify right side
    20,221.71x = 314,431,979.57
  5. Step 5: Solve for x
    x = 314,431,979.57/20,221.71
  6. Step 6: Final answer
    x = 15,549.23

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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.