Home / 13,276.80-19,917.50-3,917.38

Finding the Fourth Proportional to 13,276.80, 19,917.50 and 3,917.38

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Solution

The fourth proportional to 13,276.80, 19,917.50 and 3,917.38 is: 5,876.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,276.80 : 19,917.50 = 3,917.38 : x
  2. Step 2: Convert to fraction form
    13,276.80/19,917.50 = 3,917.38/x
  3. Step 3: Cross multiply
    13,276.80x = 19,917.50 × 3,917.38
  4. Step 4: Simplify right side
    13,276.80x = 78,024,400.29
  5. Step 5: Solve for x
    x = 78,024,400.29/13,276.80
  6. Step 6: Final answer
    x = 5,876.75

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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.