Home / 27,789.89-38,348.44-15,854.33

Finding the Fourth Proportional to 27,789.89, 38,348.44 and 15,854.33

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Solution

The fourth proportional to 27,789.89, 38,348.44 and 15,854.33 is: 21,878.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,789.89 : 38,348.44 = 15,854.33 : x
  2. Step 2: Convert to fraction form
    27,789.89/38,348.44 = 15,854.33/x
  3. Step 3: Cross multiply
    27,789.89x = 38,348.44 × 15,854.33
  4. Step 4: Simplify right side
    27,789.89x = 607,988,878.98
  5. Step 5: Solve for x
    x = 607,988,878.98/27,789.89
  6. Step 6: Final answer
    x = 21,878.06

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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.