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Finding the Fourth Proportional to 18,525.44, 27,768.72 and 6,831.20

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Solution

The fourth proportional to 18,525.44, 27,768.72 and 6,831.20 is: 10,239.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,525.44 : 27,768.72 = 6,831.20 : x
  2. Step 2: Convert to fraction form
    18,525.44/27,768.72 = 6,831.20/x
  3. Step 3: Cross multiply
    18,525.44x = 27,768.72 × 6,831.20
  4. Step 4: Simplify right side
    18,525.44x = 189,693,680.06
  5. Step 5: Solve for x
    x = 189,693,680.06/18,525.44
  6. Step 6: Final answer
    x = 10,239.63

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1.5x scale

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.