Home / 12,388.84-18,586.32-6,151.78

Finding the Fourth Proportional to 12,388.84, 18,586.32 and 6,151.78

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Solution

The fourth proportional to 12,388.84, 18,586.32 and 6,151.78 is: 9,229.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,388.84 : 18,586.32 = 6,151.78 : x
  2. Step 2: Convert to fraction form
    12,388.84/18,586.32 = 6,151.78/x
  3. Step 3: Cross multiply
    12,388.84x = 18,586.32 × 6,151.78
  4. Step 4: Simplify right side
    12,388.84x = 114,338,951.65
  5. Step 5: Solve for x
    x = 114,338,951.65/12,388.84
  6. Step 6: Final answer
    x = 9,229.19

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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.