Home / 11,989.22-17,981.65-3,222.08

Finding the Fourth Proportional to 11,989.22, 17,981.65 and 3,222.08

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Solution

The fourth proportional to 11,989.22, 17,981.65 and 3,222.08 is: 4,832.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,989.22 : 17,981.65 = 3,222.08 : x
  2. Step 2: Convert to fraction form
    11,989.22/17,981.65 = 3,222.08/x
  3. Step 3: Cross multiply
    11,989.22x = 17,981.65 × 3,222.08
  4. Step 4: Simplify right side
    11,989.22x = 57,938,278.26
  5. Step 5: Solve for x
    x = 57,938,278.26/11,989.22
  6. Step 6: Final answer
    x = 4,832.53

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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.