Home / 28,658.20-42,961.38-10,185.88

Finding the Fourth Proportional to 28,658.20, 42,961.38 and 10,185.88

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Solution

The fourth proportional to 28,658.20, 42,961.38 and 10,185.88 is: 15,269.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,658.20 : 42,961.38 = 10,185.88 : x
  2. Step 2: Convert to fraction form
    28,658.20/42,961.38 = 10,185.88/x
  3. Step 3: Cross multiply
    28,658.20x = 42,961.38 × 10,185.88
  4. Step 4: Simplify right side
    28,658.20x = 437,599,461.31
  5. Step 5: Solve for x
    x = 437,599,461.31/28,658.20
  6. Step 6: Final answer
    x = 15,269.61

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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.