Home / 39,739.05-54,840.04-21,834.41

Finding the Fourth Proportional to 39,739.05, 54,840.04 and 21,834.41

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Solution

The fourth proportional to 39,739.05, 54,840.04 and 21,834.41 is: 30,131.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,739.05 : 54,840.04 = 21,834.41 : x
  2. Step 2: Convert to fraction form
    39,739.05/54,840.04 = 21,834.41/x
  3. Step 3: Cross multiply
    39,739.05x = 54,840.04 × 21,834.41
  4. Step 4: Simplify right side
    39,739.05x = 1,197,399,588.99
  5. Step 5: Solve for x
    x = 1,197,399,588.99/39,739.05
  6. Step 6: Final answer
    x = 30,131.56

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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.