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Finding the Fourth Proportional to 12,494.15, 18,741.20 and 3,260.15

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Solution

The fourth proportional to 12,494.15, 18,741.20 and 3,260.15 is: 4,890.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,494.15 : 18,741.20 = 3,260.15 : x
  2. Step 2: Convert to fraction form
    12,494.15/18,741.20 = 3,260.15/x
  3. Step 3: Cross multiply
    12,494.15x = 18,741.20 × 3,260.15
  4. Step 4: Simplify right side
    12,494.15x = 61,099,013.17
  5. Step 5: Solve for x
    x = 61,099,013.17/12,494.15
  6. Step 6: Final answer
    x = 4,890.21

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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.