Home / 13,801.68-20,696.48-3,938.76

Finding the Fourth Proportional to 13,801.68, 20,696.48 and 3,938.76

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Solution

The fourth proportional to 13,801.68, 20,696.48 and 3,938.76 is: 5,906.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,801.68 : 20,696.48 = 3,938.76 : x
  2. Step 2: Convert to fraction form
    13,801.68/20,696.48 = 3,938.76/x
  3. Step 3: Cross multiply
    13,801.68x = 20,696.48 × 3,938.76
  4. Step 4: Simplify right side
    13,801.68x = 81,518,467.56
  5. Step 5: Solve for x
    x = 81,518,467.56/13,801.68
  6. Step 6: Final answer
    x = 5,906.42

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1.5x scale

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.