Home / 39,025.53-53,855.33-21,120.73

Finding the Fourth Proportional to 39,025.53, 53,855.33 and 21,120.73

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Solution

The fourth proportional to 39,025.53, 53,855.33 and 21,120.73 is: 29,146.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,025.53 : 53,855.33 = 21,120.73 : x
  2. Step 2: Convert to fraction form
    39,025.53/53,855.33 = 21,120.73/x
  3. Step 3: Cross multiply
    39,025.53x = 53,855.33 × 21,120.73
  4. Step 4: Simplify right side
    39,025.53x = 1,137,463,643.75
  5. Step 5: Solve for x
    x = 1,137,463,643.75/39,025.53
  6. Step 6: Final answer
    x = 29,146.65

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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.