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Finding the Fourth Proportional to 17,990.72, 24,842.86 and 11,287.87

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Solution

The fourth proportional to 17,990.72, 24,842.86 and 11,287.87 is: 15,587.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,990.72 : 24,842.86 = 11,287.87 : x
  2. Step 2: Convert to fraction form
    17,990.72/24,842.86 = 11,287.87/x
  3. Step 3: Cross multiply
    17,990.72x = 24,842.86 × 11,287.87
  4. Step 4: Simplify right side
    17,990.72x = 280,422,974.11
  5. Step 5: Solve for x
    x = 280,422,974.11/17,990.72
  6. Step 6: Final answer
    x = 15,587.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.