Home / 15,858.28-21,884.46-8,784.56

Finding the Fourth Proportional to 15,858.28, 21,884.46 and 8,784.56

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Solution

The fourth proportional to 15,858.28, 21,884.46 and 8,784.56 is: 12,122.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,858.28 : 21,884.46 = 8,784.56 : x
  2. Step 2: Convert to fraction form
    15,858.28/21,884.46 = 8,784.56/x
  3. Step 3: Cross multiply
    15,858.28x = 21,884.46 × 8,784.56
  4. Step 4: Simplify right side
    15,858.28x = 192,245,351.94
  5. Step 5: Solve for x
    x = 192,245,351.94/15,858.28
  6. Step 6: Final answer
    x = 12,122.71

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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.