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Finding the Fourth Proportional to 20,049.69, 27,679.02 and 18,724.53

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Solution

The fourth proportional to 20,049.69, 27,679.02 and 18,724.53 is: 25,849.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,049.69 : 27,679.02 = 18,724.53 : x
  2. Step 2: Convert to fraction form
    20,049.69/27,679.02 = 18,724.53/x
  3. Step 3: Cross multiply
    20,049.69x = 27,679.02 × 18,724.53
  4. Step 4: Simplify right side
    20,049.69x = 518,276,640.36
  5. Step 5: Solve for x
    x = 518,276,640.36/20,049.69
  6. Step 6: Final answer
    x = 25,849.61

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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.