Home / 39,682.87-54,763.94-21,778.51

Finding the Fourth Proportional to 39,682.87, 54,763.94 and 21,778.51

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Solution

The fourth proportional to 39,682.87, 54,763.94 and 21,778.51 is: 30,055.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,682.87 : 54,763.94 = 21,778.51 : x
  2. Step 2: Convert to fraction form
    39,682.87/54,763.94 = 21,778.51/x
  3. Step 3: Cross multiply
    39,682.87x = 54,763.94 × 21,778.51
  4. Step 4: Simplify right side
    39,682.87x = 1,192,677,014.93
  5. Step 5: Solve for x
    x = 1,192,677,014.93/39,682.87
  6. Step 6: Final answer
    x = 30,055.21

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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.