Home / 15,490.44-21,375.99-8,416.83

Finding the Fourth Proportional to 15,490.44, 21,375.99 and 8,416.83

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Solution

The fourth proportional to 15,490.44, 21,375.99 and 8,416.83 is: 11,614.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,490.44 : 21,375.99 = 8,416.83 : x
  2. Step 2: Convert to fraction form
    15,490.44/21,375.99 = 8,416.83/x
  3. Step 3: Cross multiply
    15,490.44x = 21,375.99 × 8,416.83
  4. Step 4: Simplify right side
    15,490.44x = 179,918,073.91
  5. Step 5: Solve for x
    x = 179,918,073.91/15,490.44
  6. Step 6: Final answer
    x = 11,614.78

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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.