Home / 11,819.65-16,306.55-6,782.05

Finding the Fourth Proportional to 11,819.65, 16,306.55 and 6,782.05

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Solution

The fourth proportional to 11,819.65, 16,306.55 and 6,782.05 is: 9,356.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,819.65 : 16,306.55 = 6,782.05 : x
  2. Step 2: Convert to fraction form
    11,819.65/16,306.55 = 6,782.05/x
  3. Step 3: Cross multiply
    11,819.65x = 16,306.55 × 6,782.05
  4. Step 4: Simplify right side
    11,819.65x = 110,591,803.52
  5. Step 5: Solve for x
    x = 110,591,803.52/11,819.65
  6. Step 6: Final answer
    x = 9,356.61

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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.