Home / 13,350.60-20,029.41-3,990.63

Finding the Fourth Proportional to 13,350.60, 20,029.41 and 3,990.63

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Solution

The fourth proportional to 13,350.60, 20,029.41 and 3,990.63 is: 5,986.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,350.60 : 20,029.41 = 3,990.63 : x
  2. Step 2: Convert to fraction form
    13,350.60/20,029.41 = 3,990.63/x
  3. Step 3: Cross multiply
    13,350.60x = 20,029.41 × 3,990.63
  4. Step 4: Simplify right side
    13,350.60x = 79,929,964.43
  5. Step 5: Solve for x
    x = 79,929,964.43/13,350.60
  6. Step 6: Final answer
    x = 5,986.99

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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.