Home / 11,621.75-17,398.26-7,665.71

Finding the Fourth Proportional to 11,621.75, 17,398.26 and 7,665.71

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Solution

The fourth proportional to 11,621.75, 17,398.26 and 7,665.71 is: 11,475.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,621.75 : 17,398.26 = 7,665.71 : x
  2. Step 2: Convert to fraction form
    11,621.75/17,398.26 = 7,665.71/x
  3. Step 3: Cross multiply
    11,621.75x = 17,398.26 × 7,665.71
  4. Step 4: Simplify right side
    11,621.75x = 133,369,928.67
  5. Step 5: Solve for x
    x = 133,369,928.67/11,621.75
  6. Step 6: Final answer
    x = 11,475.90

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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.