Home / 21,185.54-31,778.53-6,394.58

Finding the Fourth Proportional to 21,185.54, 31,778.53 and 6,394.58

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Solution

The fourth proportional to 21,185.54, 31,778.53 and 6,394.58 is: 9,591.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,185.54 : 31,778.53 = 6,394.58 : x
  2. Step 2: Convert to fraction form
    21,185.54/31,778.53 = 6,394.58/x
  3. Step 3: Cross multiply
    21,185.54x = 31,778.53 × 6,394.58
  4. Step 4: Simplify right side
    21,185.54x = 203,210,296.66
  5. Step 5: Solve for x
    x = 203,210,296.66/21,185.54
  6. Step 6: Final answer
    x = 9,591.93

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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.