Home / 27,725.88-38,261.66-15,789.22

Finding the Fourth Proportional to 27,725.88, 38,261.66 and 15,789.22

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Solution

The fourth proportional to 27,725.88, 38,261.66 and 15,789.22 is: 21,789.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,725.88 : 38,261.66 = 15,789.22 : x
  2. Step 2: Convert to fraction form
    27,725.88/38,261.66 = 15,789.22/x
  3. Step 3: Cross multiply
    27,725.88x = 38,261.66 × 15,789.22
  4. Step 4: Simplify right side
    27,725.88x = 604,121,767.31
  5. Step 5: Solve for x
    x = 604,121,767.31/27,725.88
  6. Step 6: Final answer
    x = 21,789.09

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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.