Home / 11,989.28-16,544-6,683.60

Finding the Fourth Proportional to 11,989.28, 16,544 and 6,683.60

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Solution

The fourth proportional to 11,989.28, 16,544 and 6,683.60 is: 9,222.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,989.28 : 16,544 = 6,683.60 : x
  2. Step 2: Convert to fraction form
    11,989.28/16,544 = 6,683.60/x
  3. Step 3: Cross multiply
    11,989.28x = 16,544 × 6,683.60
  4. Step 4: Simplify right side
    11,989.28x = 110,573,478.40
  5. Step 5: Solve for x
    x = 110,573,478.40/11,989.28
  6. Step 6: Final answer
    x = 9,222.70

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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.