Home / 13,776.68-20,660.92-7,199.28

Finding the Fourth Proportional to 13,776.68, 20,660.92 and 7,199.28

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Solution

The fourth proportional to 13,776.68, 20,660.92 and 7,199.28 is: 10,796.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,776.68 : 20,660.92 = 7,199.28 : x
  2. Step 2: Convert to fraction form
    13,776.68/20,660.92 = 7,199.28/x
  3. Step 3: Cross multiply
    13,776.68x = 20,660.92 × 7,199.28
  4. Step 4: Simplify right side
    13,776.68x = 148,743,748.14
  5. Step 5: Solve for x
    x = 148,743,748.14/13,776.68
  6. Step 6: Final answer
    x = 10,796.78

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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.