Home / 21,185.42-31,778.34-6,394.46

Finding the Fourth Proportional to 21,185.42, 31,778.34 and 6,394.46

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Solution

The fourth proportional to 21,185.42, 31,778.34 and 6,394.46 is: 9,591.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,185.42 : 31,778.34 = 6,394.46 : x
  2. Step 2: Convert to fraction form
    21,185.42/31,778.34 = 6,394.46/x
  3. Step 3: Cross multiply
    21,185.42x = 31,778.34 × 6,394.46
  4. Step 4: Simplify right side
    21,185.42x = 203,205,324.00
  5. Step 5: Solve for x
    x = 203,205,324.00/21,185.42
  6. Step 6: Final answer
    x = 9,591.75

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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.