Home / 39,739.28-54,840.17-21,834.25

Finding the Fourth Proportional to 39,739.28, 54,840.17 and 21,834.25

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Solution

The fourth proportional to 39,739.28, 54,840.17 and 21,834.25 is: 30,131.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,739.28 : 54,840.17 = 21,834.25 : x
  2. Step 2: Convert to fraction form
    39,739.28/54,840.17 = 21,834.25/x
  3. Step 3: Cross multiply
    39,739.28x = 54,840.17 × 21,834.25
  4. Step 4: Simplify right side
    39,739.28x = 1,197,393,981.82
  5. Step 5: Solve for x
    x = 1,197,393,981.82/39,739.28
  6. Step 6: Final answer
    x = 30,131.25

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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.