Home / 43,144.50-64,716.75-11,979.75

Finding the Fourth Proportional to 43,144.50, 64,716.75 and 11,979.75

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Solution

The fourth proportional to 43,144.50, 64,716.75 and 11,979.75 is: 17,969.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,144.50 : 64,716.75 = 11,979.75 : x
  2. Step 2: Convert to fraction form
    43,144.50/64,716.75 = 11,979.75/x
  3. Step 3: Cross multiply
    43,144.50x = 64,716.75 × 11,979.75
  4. Step 4: Simplify right side
    43,144.50x = 775,290,485.81
  5. Step 5: Solve for x
    x = 775,290,485.81/43,144.50
  6. Step 6: Final answer
    x = 17,969.63

Related Problems

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Double scale
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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.