Home / 11,680.88-16,121.81-7,317.23

Finding the Fourth Proportional to 11,680.88, 16,121.81 and 7,317.23

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Solution

The fourth proportional to 11,680.88, 16,121.81 and 7,317.23 is: 10,099.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,680.88 : 16,121.81 = 7,317.23 : x
  2. Step 2: Convert to fraction form
    11,680.88/16,121.81 = 7,317.23/x
  3. Step 3: Cross multiply
    11,680.88x = 16,121.81 × 7,317.23
  4. Step 4: Simplify right side
    11,680.88x = 117,966,874.59
  5. Step 5: Solve for x
    x = 117,966,874.59/11,680.88
  6. Step 6: Final answer
    x = 10,099.15

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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.