Home / 12,511.34-18,767.03-5,115.80

Finding the Fourth Proportional to 12,511.34, 18,767.03 and 5,115.80

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Solution

The fourth proportional to 12,511.34, 18,767.03 and 5,115.80 is: 7,673.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,511.34 : 18,767.03 = 5,115.80 : x
  2. Step 2: Convert to fraction form
    12,511.34/18,767.03 = 5,115.80/x
  3. Step 3: Cross multiply
    12,511.34x = 18,767.03 × 5,115.80
  4. Step 4: Simplify right side
    12,511.34x = 96,008,372.07
  5. Step 5: Solve for x
    x = 96,008,372.07/12,511.34
  6. Step 6: Final answer
    x = 7,673.71

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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.