Home / 15,163.29-20,924.78-8,448.56

Finding the Fourth Proportional to 15,163.29, 20,924.78 and 8,448.56

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Solution

The fourth proportional to 15,163.29, 20,924.78 and 8,448.56 is: 11,658.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,163.29 : 20,924.78 = 8,448.56 : x
  2. Step 2: Convert to fraction form
    15,163.29/20,924.78 = 8,448.56/x
  3. Step 3: Cross multiply
    15,163.29x = 20,924.78 × 8,448.56
  4. Step 4: Simplify right side
    15,163.29x = 176,784,112.45
  5. Step 5: Solve for x
    x = 176,784,112.45/15,163.29
  6. Step 6: Final answer
    x = 11,658.69

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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.