Home / 28,200.72-42,302.12-9,481.39

Finding the Fourth Proportional to 28,200.72, 42,302.12 and 9,481.39

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Solution

The fourth proportional to 28,200.72, 42,302.12 and 9,481.39 is: 14,222.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,200.72 : 42,302.12 = 9,481.39 : x
  2. Step 2: Convert to fraction form
    28,200.72/42,302.12 = 9,481.39/x
  3. Step 3: Cross multiply
    28,200.72x = 42,302.12 × 9,481.39
  4. Step 4: Simplify right side
    28,200.72x = 401,082,744.38
  5. Step 5: Solve for x
    x = 401,082,744.38/28,200.72
  6. Step 6: Final answer
    x = 14,222.43

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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.