Home / 13,150-19,727.34-3,918.16

Finding the Fourth Proportional to 13,150, 19,727.34 and 3,918.16

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Solution

The fourth proportional to 13,150, 19,727.34 and 3,918.16 is: 5,877.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,150 : 19,727.34 = 3,918.16 : x
  2. Step 2: Convert to fraction form
    13,150/19,727.34 = 3,918.16/x
  3. Step 3: Cross multiply
    13,150x = 19,727.34 × 3,918.16
  4. Step 4: Simplify right side
    13,150x = 77,294,874.49
  5. Step 5: Solve for x
    x = 77,294,874.49/13,150
  6. Step 6: Final answer
    x = 5,877.94

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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.