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Finding the Fourth Proportional to 12,605.44, 18,910.60 and 5,582.76

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Solution

The fourth proportional to 12,605.44, 18,910.60 and 5,582.76 is: 8,375.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,605.44 : 18,910.60 = 5,582.76 : x
  2. Step 2: Convert to fraction form
    12,605.44/18,910.60 = 5,582.76/x
  3. Step 3: Cross multiply
    12,605.44x = 18,910.60 × 5,582.76
  4. Step 4: Simplify right side
    12,605.44x = 105,573,341.26
  5. Step 5: Solve for x
    x = 105,573,341.26/12,605.44
  6. Step 6: Final answer
    x = 8,375.22

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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.