Home / 12,508.38-18,762.57-5,111.55

Finding the Fourth Proportional to 12,508.38, 18,762.57 and 5,111.55

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Solution

The fourth proportional to 12,508.38, 18,762.57 and 5,111.55 is: 7,667.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,508.38 : 18,762.57 = 5,111.55 : x
  2. Step 2: Convert to fraction form
    12,508.38/18,762.57 = 5,111.55/x
  3. Step 3: Cross multiply
    12,508.38x = 18,762.57 × 5,111.55
  4. Step 4: Simplify right side
    12,508.38x = 95,905,814.68
  5. Step 5: Solve for x
    x = 95,905,814.68/12,508.38
  6. Step 6: Final answer
    x = 7,667.33

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Similar ratio
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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.