Home / 13,281.73-19,917.95-3,919.25

Finding the Fourth Proportional to 13,281.73, 19,917.95 and 3,919.25

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Solution

The fourth proportional to 13,281.73, 19,917.95 and 3,919.25 is: 5,877.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,281.73 : 19,917.95 = 3,919.25 : x
  2. Step 2: Convert to fraction form
    13,281.73/19,917.95 = 3,919.25/x
  3. Step 3: Cross multiply
    13,281.73x = 19,917.95 × 3,919.25
  4. Step 4: Simplify right side
    13,281.73x = 78,063,455.74
  5. Step 5: Solve for x
    x = 78,063,455.74/13,281.73
  6. Step 6: Final answer
    x = 5,877.51

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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.