Home / 10,939.20-16,382.88-7,823.04

Finding the Fourth Proportional to 10,939.20, 16,382.88 and 7,823.04

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Solution

The fourth proportional to 10,939.20, 16,382.88 and 7,823.04 is: 11,716.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,939.20 : 16,382.88 = 7,823.04 : x
  2. Step 2: Convert to fraction form
    10,939.20/16,382.88 = 7,823.04/x
  3. Step 3: Cross multiply
    10,939.20x = 16,382.88 × 7,823.04
  4. Step 4: Simplify right side
    10,939.20x = 128,163,925.56
  5. Step 5: Solve for x
    x = 128,163,925.56/10,939.20
  6. Step 6: Final answer
    x = 11,716.02

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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.