Home / 43,086.40-64,629.36-11,921.60

Finding the Fourth Proportional to 43,086.40, 64,629.36 and 11,921.60

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Solution

The fourth proportional to 43,086.40, 64,629.36 and 11,921.60 is: 17,882.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,086.40 : 64,629.36 = 11,921.60 : x
  2. Step 2: Convert to fraction form
    43,086.40/64,629.36 = 11,921.60/x
  3. Step 3: Cross multiply
    43,086.40x = 64,629.36 × 11,921.60
  4. Step 4: Simplify right side
    43,086.40x = 770,485,378.18
  5. Step 5: Solve for x
    x = 770,485,378.18/43,086.40
  6. Step 6: Final answer
    x = 17,882.33

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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.