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Finding the Fourth Proportional to 28,512.07, 42,770.50 and 7,452.07

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Solution

The fourth proportional to 28,512.07, 42,770.50 and 7,452.07 is: 11,178.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,512.07 : 42,770.50 = 7,452.07 : x
  2. Step 2: Convert to fraction form
    28,512.07/42,770.50 = 7,452.07/x
  3. Step 3: Cross multiply
    28,512.07x = 42,770.50 × 7,452.07
  4. Step 4: Simplify right side
    28,512.07x = 318,728,634.38
  5. Step 5: Solve for x
    x = 318,728,634.38/28,512.07
  6. Step 6: Final answer
    x = 11,178.73

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1.5x scale

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.