Home / 15,490.14-21,375.36-8,416.44

Finding the Fourth Proportional to 15,490.14, 21,375.36 and 8,416.44

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Solution

The fourth proportional to 15,490.14, 21,375.36 and 8,416.44 is: 11,614.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,490.14 : 21,375.36 = 8,416.44 : x
  2. Step 2: Convert to fraction form
    15,490.14/21,375.36 = 8,416.44/x
  3. Step 3: Cross multiply
    15,490.14x = 21,375.36 × 8,416.44
  4. Step 4: Simplify right side
    15,490.14x = 179,904,434.92
  5. Step 5: Solve for x
    x = 179,904,434.92/15,490.14
  6. Step 6: Final answer
    x = 11,614.13

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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.