Home / 14,120-21,170.64-6,725.60

Finding the Fourth Proportional to 14,120, 21,170.64 and 6,725.60

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Solution

The fourth proportional to 14,120, 21,170.64 and 6,725.60 is: 10,083.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,120 : 21,170.64 = 6,725.60 : x
  2. Step 2: Convert to fraction form
    14,120/21,170.64 = 6,725.60/x
  3. Step 3: Cross multiply
    14,120x = 21,170.64 × 6,725.60
  4. Step 4: Simplify right side
    14,120x = 142,385,256.38
  5. Step 5: Solve for x
    x = 142,385,256.38/14,120
  6. Step 6: Final answer
    x = 10,083.94

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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.