Home / 28,724.78-39,643.90-16,151.96

Finding the Fourth Proportional to 28,724.78, 39,643.90 and 16,151.96

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Solution

The fourth proportional to 28,724.78, 39,643.90 and 16,151.96 is: 22,291.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,724.78 : 39,643.90 = 16,151.96 : x
  2. Step 2: Convert to fraction form
    28,724.78/39,643.90 = 16,151.96/x
  3. Step 3: Cross multiply
    28,724.78x = 39,643.90 × 16,151.96
  4. Step 4: Simplify right side
    28,724.78x = 640,326,687.04
  5. Step 5: Solve for x
    x = 640,326,687.04/28,724.78
  6. Step 6: Final answer
    x = 22,291.79

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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.