Home / 13,149-19,725.84-3,917.16

Finding the Fourth Proportional to 13,149, 19,725.84 and 3,917.16

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Solution

The fourth proportional to 13,149, 19,725.84 and 3,917.16 is: 5,876.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,149 : 19,725.84 = 3,917.16 : x
  2. Step 2: Convert to fraction form
    13,149/19,725.84 = 3,917.16/x
  3. Step 3: Cross multiply
    13,149x = 19,725.84 × 3,917.16
  4. Step 4: Simplify right side
    13,149x = 77,269,271.41
  5. Step 5: Solve for x
    x = 77,269,271.41/13,149
  6. Step 6: Final answer
    x = 5,876.44

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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.