Home / 28,326.60-39,087.90-21,616.56

Finding the Fourth Proportional to 28,326.60, 39,087.90 and 21,616.56

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Solution

The fourth proportional to 28,326.60, 39,087.90 and 21,616.56 is: 29,828.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,326.60 : 39,087.90 = 21,616.56 : x
  2. Step 2: Convert to fraction form
    28,326.60/39,087.90 = 21,616.56/x
  3. Step 3: Cross multiply
    28,326.60x = 39,087.90 × 21,616.56
  4. Step 4: Simplify right side
    28,326.60x = 844,945,935.62
  5. Step 5: Solve for x
    x = 844,945,935.62/28,326.60
  6. Step 6: Final answer
    x = 29,828.71

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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.