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Finding the Fourth Proportional to 17,991.41, 26,987.43 and 6,898.73

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Solution

The fourth proportional to 17,991.41, 26,987.43 and 6,898.73 is: 10,348.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,991.41 : 26,987.43 = 6,898.73 : x
  2. Step 2: Convert to fraction form
    17,991.41/26,987.43 = 6,898.73/x
  3. Step 3: Cross multiply
    17,991.41x = 26,987.43 × 6,898.73
  4. Step 4: Simplify right side
    17,991.41x = 186,178,992.96
  5. Step 5: Solve for x
    x = 186,178,992.96/17,991.41
  6. Step 6: Final answer
    x = 10,348.22

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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.