Home / 13,865.12-20,806.79-5,100.11

Finding the Fourth Proportional to 13,865.12, 20,806.79 and 5,100.11

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Solution

The fourth proportional to 13,865.12, 20,806.79 and 5,100.11 is: 7,653.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,865.12 : 20,806.79 = 5,100.11 : x
  2. Step 2: Convert to fraction form
    13,865.12/20,806.79 = 5,100.11/x
  3. Step 3: Cross multiply
    13,865.12x = 20,806.79 × 5,100.11
  4. Step 4: Simplify right side
    13,865.12x = 106,116,788.21
  5. Step 5: Solve for x
    x = 106,116,788.21/13,865.12
  6. Step 6: Final answer
    x = 7,653.51

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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.