Home / 11,929.94-16,478.82-9,080

Finding the Fourth Proportional to 11,929.94, 16,478.82 and 9,080

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Solution

The fourth proportional to 11,929.94, 16,478.82 and 9,080 is: 12,542.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,929.94 : 16,478.82 = 9,080 : x
  2. Step 2: Convert to fraction form
    11,929.94/16,478.82 = 9,080/x
  3. Step 3: Cross multiply
    11,929.94x = 16,478.82 × 9,080
  4. Step 4: Simplify right side
    11,929.94x = 149,627,685.60
  5. Step 5: Solve for x
    x = 149,627,685.60/11,929.94
  6. Step 6: Final answer
    x = 12,542.20

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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.