Home / 13,868.68-20,812.38-5,110.60

Finding the Fourth Proportional to 13,868.68, 20,812.38 and 5,110.60

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Solution

The fourth proportional to 13,868.68, 20,812.38 and 5,110.60 is: 7,669.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,868.68 : 20,812.38 = 5,110.60 : x
  2. Step 2: Convert to fraction form
    13,868.68/20,812.38 = 5,110.60/x
  3. Step 3: Cross multiply
    13,868.68x = 20,812.38 × 5,110.60
  4. Step 4: Simplify right side
    13,868.68x = 106,363,749.23
  5. Step 5: Solve for x
    x = 106,363,749.23/13,868.68
  6. Step 6: Final answer
    x = 7,669.35

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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.