Home / 15,579.43-21,499.77-8,505.97

Finding the Fourth Proportional to 15,579.43, 21,499.77 and 8,505.97

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Solution

The fourth proportional to 15,579.43, 21,499.77 and 8,505.97 is: 11,738.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,579.43 : 21,499.77 = 8,505.97 : x
  2. Step 2: Convert to fraction form
    15,579.43/21,499.77 = 8,505.97/x
  3. Step 3: Cross multiply
    15,579.43x = 21,499.77 × 8,505.97
  4. Step 4: Simplify right side
    15,579.43x = 182,876,398.63
  5. Step 5: Solve for x
    x = 182,876,398.63/15,579.43
  6. Step 6: Final answer
    x = 11,738.32

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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.