Home / 27,921.36-38,534.60-15,986

Finding the Fourth Proportional to 27,921.36, 38,534.60 and 15,986

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Solution

The fourth proportional to 27,921.36, 38,534.60 and 15,986 is: 22,062.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,921.36 : 38,534.60 = 15,986 : x
  2. Step 2: Convert to fraction form
    27,921.36/38,534.60 = 15,986/x
  3. Step 3: Cross multiply
    27,921.36x = 38,534.60 × 15,986
  4. Step 4: Simplify right side
    27,921.36x = 616,014,115.60
  5. Step 5: Solve for x
    x = 616,014,115.60/27,921.36
  6. Step 6: Final answer
    x = 22,062.47

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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.