Home / 27,921.72-38,536.76-18,963.12

Finding the Fourth Proportional to 27,921.72, 38,536.76 and 18,963.12

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Solution

The fourth proportional to 27,921.72, 38,536.76 and 18,963.12 is: 26,172.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,921.72 : 38,536.76 = 18,963.12 : x
  2. Step 2: Convert to fraction form
    27,921.72/38,536.76 = 18,963.12/x
  3. Step 3: Cross multiply
    27,921.72x = 38,536.76 × 18,963.12
  4. Step 4: Simplify right side
    27,921.72x = 730,777,204.29
  5. Step 5: Solve for x
    x = 730,777,204.29/27,921.72
  6. Step 6: Final answer
    x = 26,172.36

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Double scale
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Similar ratio
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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.