Home / 28,269.84-39,012.30-15,694.50

Finding the Fourth Proportional to 28,269.84, 39,012.30 and 15,694.50

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Solution

The fourth proportional to 28,269.84, 39,012.30 and 15,694.50 is: 21,658.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,269.84 : 39,012.30 = 15,694.50 : x
  2. Step 2: Convert to fraction form
    28,269.84/39,012.30 = 15,694.50/x
  3. Step 3: Cross multiply
    28,269.84x = 39,012.30 × 15,694.50
  4. Step 4: Simplify right side
    28,269.84x = 612,278,542.35
  5. Step 5: Solve for x
    x = 612,278,542.35/28,269.84
  6. Step 6: Final answer
    x = 21,658.37

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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.