Home / 39,738.72-54,840.32-21,834.80

Finding the Fourth Proportional to 39,738.72, 54,840.32 and 21,834.80

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Solution

The fourth proportional to 39,738.72, 54,840.32 and 21,834.80 is: 30,132.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,738.72 : 54,840.32 = 21,834.80 : x
  2. Step 2: Convert to fraction form
    39,738.72/54,840.32 = 21,834.80/x
  3. Step 3: Cross multiply
    39,738.72x = 54,840.32 × 21,834.80
  4. Step 4: Simplify right side
    39,738.72x = 1,197,427,419.14
  5. Step 5: Solve for x
    x = 1,197,427,419.14/39,738.72
  6. Step 6: Final answer
    x = 30,132.51

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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.