Home / 13,361.28-20,049.03-7,518.30

Finding the Fourth Proportional to 13,361.28, 20,049.03 and 7,518.30

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Solution

The fourth proportional to 13,361.28, 20,049.03 and 7,518.30 is: 11,281.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,361.28 : 20,049.03 = 7,518.30 : x
  2. Step 2: Convert to fraction form
    13,361.28/20,049.03 = 7,518.30/x
  3. Step 3: Cross multiply
    13,361.28x = 20,049.03 × 7,518.30
  4. Step 4: Simplify right side
    13,361.28x = 150,734,622.25
  5. Step 5: Solve for x
    x = 150,734,622.25/13,361.28
  6. Step 6: Final answer
    x = 11,281.45

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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.