Home / 39,962.66-55,147.63-21,812.79

Finding the Fourth Proportional to 39,962.66, 55,147.63 and 21,812.79

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Solution

The fourth proportional to 39,962.66, 55,147.63 and 21,812.79 is: 30,101.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,962.66 : 55,147.63 = 21,812.79 : x
  2. Step 2: Convert to fraction form
    39,962.66/55,147.63 = 21,812.79/x
  3. Step 3: Cross multiply
    39,962.66x = 55,147.63 × 21,812.79
  4. Step 4: Simplify right side
    39,962.66x = 1,202,923,396.45
  5. Step 5: Solve for x
    x = 1,202,923,396.45/39,962.66
  6. Step 6: Final answer
    x = 30,101.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.