Home / 15,220.85-21,002.10-8,504.33

Finding the Fourth Proportional to 15,220.85, 21,002.10 and 8,504.33

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Solution

The fourth proportional to 15,220.85, 21,002.10 and 8,504.33 is: 11,734.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,220.85 : 21,002.10 = 8,504.33 : x
  2. Step 2: Convert to fraction form
    15,220.85/21,002.10 = 8,504.33/x
  3. Step 3: Cross multiply
    15,220.85x = 21,002.10 × 8,504.33
  4. Step 4: Simplify right side
    15,220.85x = 178,608,789.09
  5. Step 5: Solve for x
    x = 178,608,789.09/15,220.85
  6. Step 6: Final answer
    x = 11,734.48

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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.