Home / 28,530.20-42,827.70-15,375.80

Finding the Fourth Proportional to 28,530.20, 42,827.70 and 15,375.80

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Solution

The fourth proportional to 28,530.20, 42,827.70 and 15,375.80 is: 23,081.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,530.20 : 42,827.70 = 15,375.80 : x
  2. Step 2: Convert to fraction form
    28,530.20/42,827.70 = 15,375.80/x
  3. Step 3: Cross multiply
    28,530.20x = 42,827.70 × 15,375.80
  4. Step 4: Simplify right side
    28,530.20x = 658,510,149.66
  5. Step 5: Solve for x
    x = 658,510,149.66/28,530.20
  6. Step 6: Final answer
    x = 23,081.16

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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.