Home / 15,285.42-21,092.42-8,571.33

Finding the Fourth Proportional to 15,285.42, 21,092.42 and 8,571.33

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Solution

The fourth proportional to 15,285.42, 21,092.42 and 8,571.33 is: 11,827.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,285.42 : 21,092.42 = 8,571.33 : x
  2. Step 2: Convert to fraction form
    15,285.42/21,092.42 = 8,571.33/x
  3. Step 3: Cross multiply
    15,285.42x = 21,092.42 × 8,571.33
  4. Step 4: Simplify right side
    15,285.42x = 180,790,049.46
  5. Step 5: Solve for x
    x = 180,790,049.46/15,285.42
  6. Step 6: Final answer
    x = 11,827.61

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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.