Home / 11,340.20-16,991.10-9,381.80

Finding the Fourth Proportional to 11,340.20, 16,991.10 and 9,381.80

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Solution

The fourth proportional to 11,340.20, 16,991.10 and 9,381.80 is: 14,056.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,340.20 : 16,991.10 = 9,381.80 : x
  2. Step 2: Convert to fraction form
    11,340.20/16,991.10 = 9,381.80/x
  3. Step 3: Cross multiply
    11,340.20x = 16,991.10 × 9,381.80
  4. Step 4: Simplify right side
    11,340.20x = 159,407,101.98
  5. Step 5: Solve for x
    x = 159,407,101.98/11,340.20
  6. Step 6: Final answer
    x = 14,056.82

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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.