Home / 12,581.35-18,874.30-5,181.69

Finding the Fourth Proportional to 12,581.35, 18,874.30 and 5,181.69

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Solution

The fourth proportional to 12,581.35, 18,874.30 and 5,181.69 is: 7,773.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,581.35 : 18,874.30 = 5,181.69 : x
  2. Step 2: Convert to fraction form
    12,581.35/18,874.30 = 5,181.69/x
  3. Step 3: Cross multiply
    12,581.35x = 18,874.30 × 5,181.69
  4. Step 4: Simplify right side
    12,581.35x = 97,800,771.57
  5. Step 5: Solve for x
    x = 97,800,771.57/12,581.35
  6. Step 6: Final answer
    x = 7,773.47

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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.