Home / 18,324.78-25,288.20-9,941.28

Finding the Fourth Proportional to 18,324.78, 25,288.20 and 9,941.28

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Solution

The fourth proportional to 18,324.78, 25,288.20 and 9,941.28 is: 13,718.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,324.78 : 25,288.20 = 9,941.28 : x
  2. Step 2: Convert to fraction form
    18,324.78/25,288.20 = 9,941.28/x
  3. Step 3: Cross multiply
    18,324.78x = 25,288.20 × 9,941.28
  4. Step 4: Simplify right side
    18,324.78x = 251,397,076.90
  5. Step 5: Solve for x
    x = 251,397,076.90/18,324.78
  6. Step 6: Final answer
    x = 13,718.97

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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.