Home / 28,310.86-39,070-16,213.56

Finding the Fourth Proportional to 28,310.86, 39,070 and 16,213.56

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Solution

The fourth proportional to 28,310.86, 39,070 and 16,213.56 is: 22,375.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,310.86 : 39,070 = 16,213.56 : x
  2. Step 2: Convert to fraction form
    28,310.86/39,070 = 16,213.56/x
  3. Step 3: Cross multiply
    28,310.86x = 39,070 × 16,213.56
  4. Step 4: Simplify right side
    28,310.86x = 633,463,789.20
  5. Step 5: Solve for x
    x = 633,463,789.20/28,310.86
  6. Step 6: Final answer
    x = 22,375.29

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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.