Home / 15,921.54-23,865.78-5,387.97

Finding the Fourth Proportional to 15,921.54, 23,865.78 and 5,387.97

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Solution

The fourth proportional to 15,921.54, 23,865.78 and 5,387.97 is: 8,076.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,921.54 : 23,865.78 = 5,387.97 : x
  2. Step 2: Convert to fraction form
    15,921.54/23,865.78 = 5,387.97/x
  3. Step 3: Cross multiply
    15,921.54x = 23,865.78 × 5,387.97
  4. Step 4: Simplify right side
    15,921.54x = 128,588,106.67
  5. Step 5: Solve for x
    x = 128,588,106.67/15,921.54
  6. Step 6: Final answer
    x = 8,076.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.