Home / 15,286.11-21,094.55-8,571.71

Finding the Fourth Proportional to 15,286.11, 21,094.55 and 8,571.71

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Solution

The fourth proportional to 15,286.11, 21,094.55 and 8,571.71 is: 11,828.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,286.11 : 21,094.55 = 8,571.71 : x
  2. Step 2: Convert to fraction form
    15,286.11/21,094.55 = 8,571.71/x
  3. Step 3: Cross multiply
    15,286.11x = 21,094.55 × 8,571.71
  4. Step 4: Simplify right side
    15,286.11x = 180,816,216.85
  5. Step 5: Solve for x
    x = 180,816,216.85/15,286.11
  6. Step 6: Final answer
    x = 11,828.79

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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.