Home / 27,653.12-38,163.12-15,716.48

Finding the Fourth Proportional to 27,653.12, 38,163.12 and 15,716.48

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Solution

The fourth proportional to 27,653.12, 38,163.12 and 15,716.48 is: 21,689.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,653.12 : 38,163.12 = 15,716.48 : x
  2. Step 2: Convert to fraction form
    27,653.12/38,163.12 = 15,716.48/x
  3. Step 3: Cross multiply
    27,653.12x = 38,163.12 × 15,716.48
  4. Step 4: Simplify right side
    27,653.12x = 599,789,912.22
  5. Step 5: Solve for x
    x = 599,789,912.22/27,653.12
  6. Step 6: Final answer
    x = 21,689.77

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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.