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Finding the Fourth Proportional to 10,383.80, 15,543.30 and 8,180.60

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Solution

The fourth proportional to 10,383.80, 15,543.30 and 8,180.60 is: 12,245.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,383.80 : 15,543.30 = 8,180.60 : x
  2. Step 2: Convert to fraction form
    10,383.80/15,543.30 = 8,180.60/x
  3. Step 3: Cross multiply
    10,383.80x = 15,543.30 × 8,180.60
  4. Step 4: Simplify right side
    10,383.80x = 127,153,519.98
  5. Step 5: Solve for x
    x = 127,153,519.98/10,383.80
  6. Step 6: Final answer
    x = 12,245.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.