Home / 28,268.78-39,011.62-15,523.22

Finding the Fourth Proportional to 28,268.78, 39,011.62 and 15,523.22

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Solution

The fourth proportional to 28,268.78, 39,011.62 and 15,523.22 is: 21,422.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,268.78 : 39,011.62 = 15,523.22 : x
  2. Step 2: Convert to fraction form
    28,268.78/39,011.62 = 15,523.22/x
  3. Step 3: Cross multiply
    28,268.78x = 39,011.62 × 15,523.22
  4. Step 4: Simplify right side
    28,268.78x = 605,585,959.82
  5. Step 5: Solve for x
    x = 605,585,959.82/28,268.78
  6. Step 6: Final answer
    x = 21,422.43

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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.