Home / 21,811.31-30,097.49-12,249.02

Finding the Fourth Proportional to 21,811.31, 30,097.49 and 12,249.02

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Solution

The fourth proportional to 21,811.31, 30,097.49 and 12,249.02 is: 16,902.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,811.31 : 30,097.49 = 12,249.02 : x
  2. Step 2: Convert to fraction form
    21,811.31/30,097.49 = 12,249.02/x
  3. Step 3: Cross multiply
    21,811.31x = 30,097.49 × 12,249.02
  4. Step 4: Simplify right side
    21,811.31x = 368,664,788.18
  5. Step 5: Solve for x
    x = 368,664,788.18/21,811.31
  6. Step 6: Final answer
    x = 16,902.46

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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.