Home / 15,628.62-21,563.22-8,911.80

Finding the Fourth Proportional to 15,628.62, 21,563.22 and 8,911.80

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Solution

The fourth proportional to 15,628.62, 21,563.22 and 8,911.80 is: 12,295.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,628.62 : 21,563.22 = 8,911.80 : x
  2. Step 2: Convert to fraction form
    15,628.62/21,563.22 = 8,911.80/x
  3. Step 3: Cross multiply
    15,628.62x = 21,563.22 × 8,911.80
  4. Step 4: Simplify right side
    15,628.62x = 192,167,104.00
  5. Step 5: Solve for x
    x = 192,167,104.00/15,628.62
  6. Step 6: Final answer
    x = 12,295.85

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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.