Home / 39,847.29-54,989.13-21,942.29

Finding the Fourth Proportional to 39,847.29, 54,989.13 and 21,942.29

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Solution

The fourth proportional to 39,847.29, 54,989.13 and 21,942.29 is: 30,280.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,847.29 : 54,989.13 = 21,942.29 : x
  2. Step 2: Convert to fraction form
    39,847.29/54,989.13 = 21,942.29/x
  3. Step 3: Cross multiply
    39,847.29x = 54,989.13 × 21,942.29
  4. Step 4: Simplify right side
    39,847.29x = 1,206,587,533.64
  5. Step 5: Solve for x
    x = 1,206,587,533.64/39,847.29
  6. Step 6: Final answer
    x = 30,280.29

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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.