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Finding the Fourth Proportional to 17,991.63, 26,991.09 and 6,898.68

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Solution

The fourth proportional to 17,991.63, 26,991.09 and 6,898.68 is: 10,349.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,991.63 : 26,991.09 = 6,898.68 : x
  2. Step 2: Convert to fraction form
    17,991.63/26,991.09 = 6,898.68/x
  3. Step 3: Cross multiply
    17,991.63x = 26,991.09 × 6,898.68
  4. Step 4: Simplify right side
    17,991.63x = 186,202,892.76
  5. Step 5: Solve for x
    x = 186,202,892.76/17,991.63
  6. Step 6: Final answer
    x = 10,349.42

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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.