Home / 13,353.45-20,024.64-3,990.12

Finding the Fourth Proportional to 13,353.45, 20,024.64 and 3,990.12

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Solution

The fourth proportional to 13,353.45, 20,024.64 and 3,990.12 is: 5,983.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,353.45 : 20,024.64 = 3,990.12 : x
  2. Step 2: Convert to fraction form
    13,353.45/20,024.64 = 3,990.12/x
  3. Step 3: Cross multiply
    13,353.45x = 20,024.64 × 3,990.12
  4. Step 4: Simplify right side
    13,353.45x = 79,900,716.56
  5. Step 5: Solve for x
    x = 79,900,716.56/13,353.45
  6. Step 6: Final answer
    x = 5,983.53

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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.