Home / 15,322.56-21,145.22-8,608.47

Finding the Fourth Proportional to 15,322.56, 21,145.22 and 8,608.47

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Solution

The fourth proportional to 15,322.56, 21,145.22 and 8,608.47 is: 11,879.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,322.56 : 21,145.22 = 8,608.47 : x
  2. Step 2: Convert to fraction form
    15,322.56/21,145.22 = 8,608.47/x
  3. Step 3: Cross multiply
    15,322.56x = 21,145.22 × 8,608.47
  4. Step 4: Simplify right side
    15,322.56x = 182,027,948.97
  5. Step 5: Solve for x
    x = 182,027,948.97/15,322.56
  6. Step 6: Final answer
    x = 11,879.73

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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.