Home / 18,663.53-25,757.49-13,939.61

Finding the Fourth Proportional to 18,663.53, 25,757.49 and 13,939.61

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Solution

The fourth proportional to 18,663.53, 25,757.49 and 13,939.61 is: 19,238.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,663.53 : 25,757.49 = 13,939.61 : x
  2. Step 2: Convert to fraction form
    18,663.53/25,757.49 = 13,939.61/x
  3. Step 3: Cross multiply
    18,663.53x = 25,757.49 × 13,939.61
  4. Step 4: Simplify right side
    18,663.53x = 359,049,365.18
  5. Step 5: Solve for x
    x = 359,049,365.18/18,663.53
  6. Step 6: Final answer
    x = 19,238.02

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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.