Home / 13,881.07-20,821.41-3,351

Finding the Fourth Proportional to 13,881.07, 20,821.41 and 3,351

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Solution

The fourth proportional to 13,881.07, 20,821.41 and 3,351 is: 5,026.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,881.07 : 20,821.41 = 3,351 : x
  2. Step 2: Convert to fraction form
    13,881.07/20,821.41 = 3,351/x
  3. Step 3: Cross multiply
    13,881.07x = 20,821.41 × 3,351
  4. Step 4: Simplify right side
    13,881.07x = 69,772,544.91
  5. Step 5: Solve for x
    x = 69,772,544.91/13,881.07
  6. Step 6: Final answer
    x = 5,026.45

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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.