Home / 15,653.32-21,600.78-8,578.37

Finding the Fourth Proportional to 15,653.32, 21,600.78 and 8,578.37

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Solution

The fourth proportional to 15,653.32, 21,600.78 and 8,578.37 is: 11,837.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,653.32 : 21,600.78 = 8,578.37 : x
  2. Step 2: Convert to fraction form
    15,653.32/21,600.78 = 8,578.37/x
  3. Step 3: Cross multiply
    15,653.32x = 21,600.78 × 8,578.37
  4. Step 4: Simplify right side
    15,653.32x = 185,299,504.96
  5. Step 5: Solve for x
    x = 185,299,504.96/15,653.32
  6. Step 6: Final answer
    x = 11,837.71

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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.