Home / 11,693.31-16,136.82-6,388.21

Finding the Fourth Proportional to 11,693.31, 16,136.82 and 6,388.21

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Solution

The fourth proportional to 11,693.31, 16,136.82 and 6,388.21 is: 8,815.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,693.31 : 16,136.82 = 6,388.21 : x
  2. Step 2: Convert to fraction form
    11,693.31/16,136.82 = 6,388.21/x
  3. Step 3: Cross multiply
    11,693.31x = 16,136.82 × 6,388.21
  4. Step 4: Simplify right side
    11,693.31x = 103,085,415.06
  5. Step 5: Solve for x
    x = 103,085,415.06/11,693.31
  6. Step 6: Final answer
    x = 8,815.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.