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Finding the Fourth Proportional to 28,410.62, 42,615.91 and 7,634.12

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Solution

The fourth proportional to 28,410.62, 42,615.91 and 7,634.12 is: 11,451.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,410.62 : 42,615.91 = 7,634.12 : x
  2. Step 2: Convert to fraction form
    28,410.62/42,615.91 = 7,634.12/x
  3. Step 3: Cross multiply
    28,410.62x = 42,615.91 × 7,634.12
  4. Step 4: Simplify right side
    28,410.62x = 325,335,086.93
  5. Step 5: Solve for x
    x = 325,335,086.93/28,410.62
  6. Step 6: Final answer
    x = 11,451.18

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Similar ratio
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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.