Home / 10,914.40-16,371.60-3,991.60

Finding the Fourth Proportional to 10,914.40, 16,371.60 and 3,991.60

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Solution

The fourth proportional to 10,914.40, 16,371.60 and 3,991.60 is: 5,987.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,914.40 : 16,371.60 = 3,991.60 : x
  2. Step 2: Convert to fraction form
    10,914.40/16,371.60 = 3,991.60/x
  3. Step 3: Cross multiply
    10,914.40x = 16,371.60 × 3,991.60
  4. Step 4: Simplify right side
    10,914.40x = 65,348,878.56
  5. Step 5: Solve for x
    x = 65,348,878.56/10,914.40
  6. Step 6: Final answer
    x = 5,987.40

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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.