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Finding the Fourth Proportional to 27,249.12, 40,872 and 8,528.64

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Solution

The fourth proportional to 27,249.12, 40,872 and 8,528.64 is: 12,792.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,249.12 : 40,872 = 8,528.64 : x
  2. Step 2: Convert to fraction form
    27,249.12/40,872 = 8,528.64/x
  3. Step 3: Cross multiply
    27,249.12x = 40,872 × 8,528.64
  4. Step 4: Simplify right side
    27,249.12x = 348,582,574.08
  5. Step 5: Solve for x
    x = 348,582,574.08/27,249.12
  6. Step 6: Final answer
    x = 12,792.43

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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.