Home / 21,831.18-32,728.26-7,786.98

Finding the Fourth Proportional to 21,831.18, 32,728.26 and 7,786.98

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Solution

The fourth proportional to 21,831.18, 32,728.26 and 7,786.98 is: 11,673.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,831.18 : 32,728.26 = 7,786.98 : x
  2. Step 2: Convert to fraction form
    21,831.18/32,728.26 = 7,786.98/x
  3. Step 3: Cross multiply
    21,831.18x = 32,728.26 × 7,786.98
  4. Step 4: Simplify right side
    21,831.18x = 254,854,306.05
  5. Step 5: Solve for x
    x = 254,854,306.05/21,831.18
  6. Step 6: Final answer
    x = 11,673.87

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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.