Home / 13,869.40-20,812.34-5,110.46

Finding the Fourth Proportional to 13,869.40, 20,812.34 and 5,110.46

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Solution

The fourth proportional to 13,869.40, 20,812.34 and 5,110.46 is: 7,668.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,869.40 : 20,812.34 = 5,110.46 : x
  2. Step 2: Convert to fraction form
    13,869.40/20,812.34 = 5,110.46/x
  3. Step 3: Cross multiply
    13,869.40x = 20,812.34 × 5,110.46
  4. Step 4: Simplify right side
    13,869.40x = 106,360,631.08
  5. Step 5: Solve for x
    x = 106,360,631.08/13,869.40
  6. Step 6: Final answer
    x = 7,668.73

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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.