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Finding the Fourth Proportional to 12,558.74, 18,841 and 5,540.76

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Solution

The fourth proportional to 12,558.74, 18,841 and 5,540.76 is: 8,312.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,558.74 : 18,841 = 5,540.76 : x
  2. Step 2: Convert to fraction form
    12,558.74/18,841 = 5,540.76/x
  3. Step 3: Cross multiply
    12,558.74x = 18,841 × 5,540.76
  4. Step 4: Simplify right side
    12,558.74x = 104,393,459.16
  5. Step 5: Solve for x
    x = 104,393,459.16/12,558.74
  6. Step 6: Final answer
    x = 8,312.42

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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.