Home / 21,081.96-31,627.09-6,290.55

Finding the Fourth Proportional to 21,081.96, 31,627.09 and 6,290.55

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Solution

The fourth proportional to 21,081.96, 31,627.09 and 6,290.55 is: 9,437.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,081.96 : 31,627.09 = 6,290.55 : x
  2. Step 2: Convert to fraction form
    21,081.96/31,627.09 = 6,290.55/x
  3. Step 3: Cross multiply
    21,081.96x = 31,627.09 × 6,290.55
  4. Step 4: Simplify right side
    21,081.96x = 198,951,791.00
  5. Step 5: Solve for x
    x = 198,951,791.00/21,081.96
  6. Step 6: Final answer
    x = 9,437.06

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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.