Home / 13,228.40-19,842.60-3,993.20

Finding the Fourth Proportional to 13,228.40, 19,842.60 and 3,993.20

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Solution

The fourth proportional to 13,228.40, 19,842.60 and 3,993.20 is: 5,989.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,228.40 : 19,842.60 = 3,993.20 : x
  2. Step 2: Convert to fraction form
    13,228.40/19,842.60 = 3,993.20/x
  3. Step 3: Cross multiply
    13,228.40x = 19,842.60 × 3,993.20
  4. Step 4: Simplify right side
    13,228.40x = 79,235,470.32
  5. Step 5: Solve for x
    x = 79,235,470.32/13,228.40
  6. Step 6: Final answer
    x = 5,989.80

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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.