Home / 38,658.97-57,989.67-18,391.30

Finding the Fourth Proportional to 38,658.97, 57,989.67 and 18,391.30

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Solution

The fourth proportional to 38,658.97, 57,989.67 and 18,391.30 is: 27,587.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,658.97 : 57,989.67 = 18,391.30 : x
  2. Step 2: Convert to fraction form
    38,658.97/57,989.67 = 18,391.30/x
  3. Step 3: Cross multiply
    38,658.97x = 57,989.67 × 18,391.30
  4. Step 4: Simplify right side
    38,658.97x = 1,066,505,417.87
  5. Step 5: Solve for x
    x = 1,066,505,417.87/38,658.97
  6. Step 6: Final answer
    x = 27,587.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.