Home / 21,185.34-31,778.24-6,394.39

Finding the Fourth Proportional to 21,185.34, 31,778.24 and 6,394.39

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Solution

The fourth proportional to 21,185.34, 31,778.24 and 6,394.39 is: 9,591.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,185.34 : 31,778.24 = 6,394.39 : x
  2. Step 2: Convert to fraction form
    21,185.34/31,778.24 = 6,394.39/x
  3. Step 3: Cross multiply
    21,185.34x = 31,778.24 × 6,394.39
  4. Step 4: Simplify right side
    21,185.34x = 203,202,460.07
  5. Step 5: Solve for x
    x = 203,202,460.07/21,185.34
  6. Step 6: Final answer
    x = 9,591.65

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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.