Home / 15,220.46-21,004.34-8,506.37

Finding the Fourth Proportional to 15,220.46, 21,004.34 and 8,506.37

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Solution

The fourth proportional to 15,220.46, 21,004.34 and 8,506.37 is: 11,738.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,220.46 : 21,004.34 = 8,506.37 : x
  2. Step 2: Convert to fraction form
    15,220.46/21,004.34 = 8,506.37/x
  3. Step 3: Cross multiply
    15,220.46x = 21,004.34 × 8,506.37
  4. Step 4: Simplify right side
    15,220.46x = 178,670,540.09
  5. Step 5: Solve for x
    x = 178,670,540.09/15,220.46
  6. Step 6: Final answer
    x = 11,738.84

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Half scale
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Double scale
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Similar ratio
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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.