Home / 39,847.77-54,990.29-21,942.85

Finding the Fourth Proportional to 39,847.77, 54,990.29 and 21,942.85

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Solution

The fourth proportional to 39,847.77, 54,990.29 and 21,942.85 is: 30,281.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,847.77 : 54,990.29 = 21,942.85 : x
  2. Step 2: Convert to fraction form
    39,847.77/54,990.29 = 21,942.85/x
  3. Step 3: Cross multiply
    39,847.77x = 54,990.29 × 21,942.85
  4. Step 4: Simplify right side
    39,847.77x = 1,206,643,437.74
  5. Step 5: Solve for x
    x = 1,206,643,437.74/39,847.77
  6. Step 6: Final answer
    x = 30,281.33

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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.