Home / 13,350.14-20,028.04-3,990.90

Finding the Fourth Proportional to 13,350.14, 20,028.04 and 3,990.90

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Solution

The fourth proportional to 13,350.14, 20,028.04 and 3,990.90 is: 5,987.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,350.14 : 20,028.04 = 3,990.90 : x
  2. Step 2: Convert to fraction form
    13,350.14/20,028.04 = 3,990.90/x
  3. Step 3: Cross multiply
    13,350.14x = 20,028.04 × 3,990.90
  4. Step 4: Simplify right side
    13,350.14x = 79,929,904.84
  5. Step 5: Solve for x
    x = 79,929,904.84/13,350.14
  6. Step 6: Final answer
    x = 5,987.20

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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.