Home / 17,949.40-24,769.90-9,991.62

Finding the Fourth Proportional to 17,949.40, 24,769.90 and 9,991.62

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Solution

The fourth proportional to 17,949.40, 24,769.90 and 9,991.62 is: 13,788.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,949.40 : 24,769.90 = 9,991.62 : x
  2. Step 2: Convert to fraction form
    17,949.40/24,769.90 = 9,991.62/x
  3. Step 3: Cross multiply
    17,949.40x = 24,769.90 × 9,991.62
  4. Step 4: Simplify right side
    17,949.40x = 247,491,428.24
  5. Step 5: Solve for x
    x = 247,491,428.24/17,949.40
  6. Step 6: Final answer
    x = 13,788.28

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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.