Home / 13,982.41-20,973.61-3,987.36

Finding the Fourth Proportional to 13,982.41, 20,973.61 and 3,987.36

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Solution

The fourth proportional to 13,982.41, 20,973.61 and 3,987.36 is: 5,981.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,982.41 : 20,973.61 = 3,987.36 : x
  2. Step 2: Convert to fraction form
    13,982.41/20,973.61 = 3,987.36/x
  3. Step 3: Cross multiply
    13,982.41x = 20,973.61 × 3,987.36
  4. Step 4: Simplify right side
    13,982.41x = 83,629,441.05
  5. Step 5: Solve for x
    x = 83,629,441.05/13,982.41
  6. Step 6: Final answer
    x = 5,981.05

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Similar ratio
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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.