Home / 21,185.93-31,791.45-8,049.35

Finding the Fourth Proportional to 21,185.93, 31,791.45 and 8,049.35

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Solution

The fourth proportional to 21,185.93, 31,791.45 and 8,049.35 is: 12,078.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,185.93 : 31,791.45 = 8,049.35 : x
  2. Step 2: Convert to fraction form
    21,185.93/31,791.45 = 8,049.35/x
  3. Step 3: Cross multiply
    21,185.93x = 31,791.45 × 8,049.35
  4. Step 4: Simplify right side
    21,185.93x = 255,900,508.06
  5. Step 5: Solve for x
    x = 255,900,508.06/21,185.93
  6. Step 6: Final answer
    x = 12,078.80

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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.