Home / 21,966.78-33,100.07-18,156.54

Finding the Fourth Proportional to 21,966.78, 33,100.07 and 18,156.54

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Solution

The fourth proportional to 21,966.78, 33,100.07 and 18,156.54 is: 27,358.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,966.78 : 33,100.07 = 18,156.54 : x
  2. Step 2: Convert to fraction form
    21,966.78/33,100.07 = 18,156.54/x
  3. Step 3: Cross multiply
    21,966.78x = 33,100.07 × 18,156.54
  4. Step 4: Simplify right side
    21,966.78x = 600,982,654.18
  5. Step 5: Solve for x
    x = 600,982,654.18/21,966.78
  6. Step 6: Final answer
    x = 27,358.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.