Home / 40,142.99-55,397.33-21,993.79

Finding the Fourth Proportional to 40,142.99, 55,397.33 and 21,993.79

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Solution

The fourth proportional to 40,142.99, 55,397.33 and 21,993.79 is: 30,351.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,142.99 : 55,397.33 = 21,993.79 : x
  2. Step 2: Convert to fraction form
    40,142.99/55,397.33 = 21,993.79/x
  3. Step 3: Cross multiply
    40,142.99x = 55,397.33 × 21,993.79
  4. Step 4: Simplify right side
    40,142.99x = 1,218,397,242.58
  5. Step 5: Solve for x
    x = 1,218,397,242.58/40,142.99
  6. Step 6: Final answer
    x = 30,351.43

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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.