Home / 18,305.20-27,426.46-9,991.05

Finding the Fourth Proportional to 18,305.20, 27,426.46 and 9,991.05

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Solution

The fourth proportional to 18,305.20, 27,426.46 and 9,991.05 is: 14,969.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,305.20 : 27,426.46 = 9,991.05 : x
  2. Step 2: Convert to fraction form
    18,305.20/27,426.46 = 9,991.05/x
  3. Step 3: Cross multiply
    18,305.20x = 27,426.46 × 9,991.05
  4. Step 4: Simplify right side
    18,305.20x = 274,019,255.50
  5. Step 5: Solve for x
    x = 274,019,255.50/18,305.20
  6. Step 6: Final answer
    x = 14,969.47

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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.