Home / 11,150.64-15,382.44-9,381.60

Finding the Fourth Proportional to 11,150.64, 15,382.44 and 9,381.60

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Solution

The fourth proportional to 11,150.64, 15,382.44 and 9,381.60 is: 12,942.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,150.64 : 15,382.44 = 9,381.60 : x
  2. Step 2: Convert to fraction form
    11,150.64/15,382.44 = 9,381.60/x
  3. Step 3: Cross multiply
    11,150.64x = 15,382.44 × 9,381.60
  4. Step 4: Simplify right side
    11,150.64x = 144,311,899.10
  5. Step 5: Solve for x
    x = 144,311,899.10/11,150.64
  6. Step 6: Final answer
    x = 12,942.03

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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.