Home / 21,903.36-30,226.64-11,831.80

Finding the Fourth Proportional to 21,903.36, 30,226.64 and 11,831.80

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Solution

The fourth proportional to 21,903.36, 30,226.64 and 11,831.80 is: 16,327.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,903.36 : 30,226.64 = 11,831.80 : x
  2. Step 2: Convert to fraction form
    21,903.36/30,226.64 = 11,831.80/x
  3. Step 3: Cross multiply
    21,903.36x = 30,226.64 × 11,831.80
  4. Step 4: Simplify right side
    21,903.36x = 357,635,408.02
  5. Step 5: Solve for x
    x = 357,635,408.02/21,903.36
  6. Step 6: Final answer
    x = 16,327.88

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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.