Home / 15,322.49-21,145.05-8,608.12

Finding the Fourth Proportional to 15,322.49, 21,145.05 and 8,608.12

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Solution

The fourth proportional to 15,322.49, 21,145.05 and 8,608.12 is: 11,879.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,322.49 : 21,145.05 = 8,608.12 : x
  2. Step 2: Convert to fraction form
    15,322.49/21,145.05 = 8,608.12/x
  3. Step 3: Cross multiply
    15,322.49x = 21,145.05 × 8,608.12
  4. Step 4: Simplify right side
    15,322.49x = 182,019,074.94
  5. Step 5: Solve for x
    x = 182,019,074.94/15,322.49
  6. Step 6: Final answer
    x = 11,879.21

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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.