Home / 13,291.97-19,941.36-3,931.61

Finding the Fourth Proportional to 13,291.97, 19,941.36 and 3,931.61

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Solution

The fourth proportional to 13,291.97, 19,941.36 and 3,931.61 is: 5,898.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,291.97 : 19,941.36 = 3,931.61 : x
  2. Step 2: Convert to fraction form
    13,291.97/19,941.36 = 3,931.61/x
  3. Step 3: Cross multiply
    13,291.97x = 19,941.36 × 3,931.61
  4. Step 4: Simplify right side
    13,291.97x = 78,401,550.68
  5. Step 5: Solve for x
    x = 78,401,550.68/13,291.97
  6. Step 6: Final answer
    x = 5,898.42

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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.