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Finding the Fourth Proportional to 27,293.53, 40,926.45 and 12,489.77

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Solution

The fourth proportional to 27,293.53, 40,926.45 and 12,489.77 is: 18,728.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,293.53 : 40,926.45 = 12,489.77 : x
  2. Step 2: Convert to fraction form
    27,293.53/40,926.45 = 12,489.77/x
  3. Step 3: Cross multiply
    27,293.53x = 40,926.45 × 12,489.77
  4. Step 4: Simplify right side
    27,293.53x = 511,161,911.21
  5. Step 5: Solve for x
    x = 511,161,911.21/27,293.53
  6. Step 6: Final answer
    x = 18,728.32

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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.