Home / 13,815.82-20,729.19-5,051.41

Finding the Fourth Proportional to 13,815.82, 20,729.19 and 5,051.41

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Solution

The fourth proportional to 13,815.82, 20,729.19 and 5,051.41 is: 7,579.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,815.82 : 20,729.19 = 5,051.41 : x
  2. Step 2: Convert to fraction form
    13,815.82/20,729.19 = 5,051.41/x
  3. Step 3: Cross multiply
    13,815.82x = 20,729.19 × 5,051.41
  4. Step 4: Simplify right side
    13,815.82x = 104,711,637.66
  5. Step 5: Solve for x
    x = 104,711,637.66/13,815.82
  6. Step 6: Final answer
    x = 7,579.11

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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.