Home / 21,246.22-31,845.94-8,759.40

Finding the Fourth Proportional to 21,246.22, 31,845.94 and 8,759.40

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Solution

The fourth proportional to 21,246.22, 31,845.94 and 8,759.40 is: 13,129.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,246.22 : 31,845.94 = 8,759.40 : x
  2. Step 2: Convert to fraction form
    21,246.22/31,845.94 = 8,759.40/x
  3. Step 3: Cross multiply
    21,246.22x = 31,845.94 × 8,759.40
  4. Step 4: Simplify right side
    21,246.22x = 278,951,185.52
  5. Step 5: Solve for x
    x = 278,951,185.52/21,246.22
  6. Step 6: Final answer
    x = 13,129.45

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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.