Home / 19,728.69-27,207.56-15,422.35

Finding the Fourth Proportional to 19,728.69, 27,207.56 and 15,422.35

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Solution

The fourth proportional to 19,728.69, 27,207.56 and 15,422.35 is: 21,268.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,728.69 : 27,207.56 = 15,422.35 : x
  2. Step 2: Convert to fraction form
    19,728.69/27,207.56 = 15,422.35/x
  3. Step 3: Cross multiply
    19,728.69x = 27,207.56 × 15,422.35
  4. Step 4: Simplify right side
    19,728.69x = 419,604,512.97
  5. Step 5: Solve for x
    x = 419,604,512.97/19,728.69
  6. Step 6: Final answer
    x = 21,268.75

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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.