Home / 11,105.42-15,318.32-6,625.72

Finding the Fourth Proportional to 11,105.42, 15,318.32 and 6,625.72

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Solution

The fourth proportional to 11,105.42, 15,318.32 and 6,625.72 is: 9,139.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,105.42 : 15,318.32 = 6,625.72 : x
  2. Step 2: Convert to fraction form
    11,105.42/15,318.32 = 6,625.72/x
  3. Step 3: Cross multiply
    11,105.42x = 15,318.32 × 6,625.72
  4. Step 4: Simplify right side
    11,105.42x = 101,494,899.19
  5. Step 5: Solve for x
    x = 101,494,899.19/11,105.42
  6. Step 6: Final answer
    x = 9,139.22

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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.