Home / 28,338.31-42,505.92-8,615.33

Finding the Fourth Proportional to 28,338.31, 42,505.92 and 8,615.33

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Solution

The fourth proportional to 28,338.31, 42,505.92 and 8,615.33 is: 12,922.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,338.31 : 42,505.92 = 8,615.33 : x
  2. Step 2: Convert to fraction form
    28,338.31/42,505.92 = 8,615.33/x
  3. Step 3: Cross multiply
    28,338.31x = 42,505.92 × 8,615.33
  4. Step 4: Simplify right side
    28,338.31x = 366,202,315.22
  5. Step 5: Solve for x
    x = 366,202,315.22/28,338.31
  6. Step 6: Final answer
    x = 12,922.52

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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.