Home / 18,221.49-27,322.92-11,985.03

Finding the Fourth Proportional to 18,221.49, 27,322.92 and 11,985.03

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Solution

The fourth proportional to 18,221.49, 27,322.92 and 11,985.03 is: 17,971.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,221.49 : 27,322.92 = 11,985.03 : x
  2. Step 2: Convert to fraction form
    18,221.49/27,322.92 = 11,985.03/x
  3. Step 3: Cross multiply
    18,221.49x = 27,322.92 × 11,985.03
  4. Step 4: Simplify right side
    18,221.49x = 327,466,015.89
  5. Step 5: Solve for x
    x = 327,466,015.89/18,221.49
  6. Step 6: Final answer
    x = 17,971.42

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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.