Home / 13,718.81-20,578.22-3,858.09

Finding the Fourth Proportional to 13,718.81, 20,578.22 and 3,858.09

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Solution

The fourth proportional to 13,718.81, 20,578.22 and 3,858.09 is: 5,787.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,718.81 : 20,578.22 = 3,858.09 : x
  2. Step 2: Convert to fraction form
    13,718.81/20,578.22 = 3,858.09/x
  3. Step 3: Cross multiply
    13,718.81x = 20,578.22 × 3,858.09
  4. Step 4: Simplify right side
    13,718.81x = 79,392,656.95
  5. Step 5: Solve for x
    x = 79,392,656.95/13,718.81
  6. Step 6: Final answer
    x = 5,787.14

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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.