Home / 21,229.86-31,809.33-14,979.54

Finding the Fourth Proportional to 21,229.86, 31,809.33 and 14,979.54

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Solution

The fourth proportional to 21,229.86, 31,809.33 and 14,979.54 is: 22,444.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,229.86 : 31,809.33 = 14,979.54 : x
  2. Step 2: Convert to fraction form
    21,229.86/31,809.33 = 14,979.54/x
  3. Step 3: Cross multiply
    21,229.86x = 31,809.33 × 14,979.54
  4. Step 4: Simplify right side
    21,229.86x = 476,489,131.11
  5. Step 5: Solve for x
    x = 476,489,131.11/21,229.86
  6. Step 6: Final answer
    x = 22,444.29

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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.