Home / 28,558.20-42,837.30-16,699.80

Finding the Fourth Proportional to 28,558.20, 42,837.30 and 16,699.80

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Solution

The fourth proportional to 28,558.20, 42,837.30 and 16,699.80 is: 25,049.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,558.20 : 42,837.30 = 16,699.80 : x
  2. Step 2: Convert to fraction form
    28,558.20/42,837.30 = 16,699.80/x
  3. Step 3: Cross multiply
    28,558.20x = 42,837.30 × 16,699.80
  4. Step 4: Simplify right side
    28,558.20x = 715,374,342.54
  5. Step 5: Solve for x
    x = 715,374,342.54/28,558.20
  6. Step 6: Final answer
    x = 25,049.70

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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.