Home / 21,196.89-31,759.29-15,620.04

Finding the Fourth Proportional to 21,196.89, 31,759.29 and 15,620.04

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Solution

The fourth proportional to 21,196.89, 31,759.29 and 15,620.04 is: 23,403.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,196.89 : 31,759.29 = 15,620.04 : x
  2. Step 2: Convert to fraction form
    21,196.89/31,759.29 = 15,620.04/x
  3. Step 3: Cross multiply
    21,196.89x = 31,759.29 × 15,620.04
  4. Step 4: Simplify right side
    21,196.89x = 496,081,380.17
  5. Step 5: Solve for x
    x = 496,081,380.17/21,196.89
  6. Step 6: Final answer
    x = 23,403.50

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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.