Home / 15,449.36-21,320.17-8,375.79

Finding the Fourth Proportional to 15,449.36, 21,320.17 and 8,375.79

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Solution

The fourth proportional to 15,449.36, 21,320.17 and 8,375.79 is: 11,558.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,449.36 : 21,320.17 = 8,375.79 : x
  2. Step 2: Convert to fraction form
    15,449.36/21,320.17 = 8,375.79/x
  3. Step 3: Cross multiply
    15,449.36x = 21,320.17 × 8,375.79
  4. Step 4: Simplify right side
    15,449.36x = 178,573,245.74
  5. Step 5: Solve for x
    x = 178,573,245.74/15,449.36
  6. Step 6: Final answer
    x = 11,558.62

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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.