Home / 21,185.20-31,777.79-9,336.44

Finding the Fourth Proportional to 21,185.20, 31,777.79 and 9,336.44

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Solution

The fourth proportional to 21,185.20, 31,777.79 and 9,336.44 is: 14,004.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,185.20 : 31,777.79 = 9,336.44 : x
  2. Step 2: Convert to fraction form
    21,185.20/31,777.79 = 9,336.44/x
  3. Step 3: Cross multiply
    21,185.20x = 31,777.79 × 9,336.44
  4. Step 4: Simplify right side
    21,185.20x = 296,691,451.83
  5. Step 5: Solve for x
    x = 296,691,451.83/21,185.20
  6. Step 6: Final answer
    x = 14,004.66

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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.