Home / 28,464.56-39,282.61-15,717.69

Finding the Fourth Proportional to 28,464.56, 39,282.61 and 15,717.69

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Solution

The fourth proportional to 28,464.56, 39,282.61 and 15,717.69 is: 21,691.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,464.56 : 39,282.61 = 15,717.69 : x
  2. Step 2: Convert to fraction form
    28,464.56/39,282.61 = 15,717.69/x
  3. Step 3: Cross multiply
    28,464.56x = 39,282.61 × 15,717.69
  4. Step 4: Simplify right side
    28,464.56x = 617,431,906.02
  5. Step 5: Solve for x
    x = 617,431,906.02/28,464.56
  6. Step 6: Final answer
    x = 21,691.25

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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.