Home / 21,419.96-29,559.56-11,988.52

Finding the Fourth Proportional to 21,419.96, 29,559.56 and 11,988.52

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Solution

The fourth proportional to 21,419.96, 29,559.56 and 11,988.52 is: 16,544.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,419.96 : 29,559.56 = 11,988.52 : x
  2. Step 2: Convert to fraction form
    21,419.96/29,559.56 = 11,988.52/x
  3. Step 3: Cross multiply
    21,419.96x = 29,559.56 × 11,988.52
  4. Step 4: Simplify right side
    21,419.96x = 354,375,376.25
  5. Step 5: Solve for x
    x = 354,375,376.25/21,419.96
  6. Step 6: Final answer
    x = 16,544.17

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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.