Home / 28,979.25-39,991.37-16,404

Finding the Fourth Proportional to 28,979.25, 39,991.37 and 16,404

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Solution

The fourth proportional to 28,979.25, 39,991.37 and 16,404 is: 22,637.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,979.25 : 39,991.37 = 16,404 : x
  2. Step 2: Convert to fraction form
    28,979.25/39,991.37 = 16,404/x
  3. Step 3: Cross multiply
    28,979.25x = 39,991.37 × 16,404
  4. Step 4: Simplify right side
    28,979.25x = 656,018,351.46
  5. Step 5: Solve for x
    x = 656,018,351.46/28,979.25
  6. Step 6: Final answer
    x = 22,637.52

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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.