Home / 28,616-42,909.42-11,971.52

Finding the Fourth Proportional to 28,616, 42,909.42 and 11,971.52

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Solution

The fourth proportional to 28,616, 42,909.42 and 11,971.52 is: 17,951.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,616 : 42,909.42 = 11,971.52 : x
  2. Step 2: Convert to fraction form
    28,616/42,909.42 = 11,971.52/x
  3. Step 3: Cross multiply
    28,616x = 42,909.42 × 11,971.52
  4. Step 4: Simplify right side
    28,616x = 513,690,979.72
  5. Step 5: Solve for x
    x = 513,690,979.72/28,616
  6. Step 6: Final answer
    x = 17,951.18

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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.