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Finding the Fourth Proportional to 15,212.38, 20,993.08 and 8,588.38

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Solution

The fourth proportional to 15,212.38, 20,993.08 and 8,588.38 is: 11,851.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,212.38 : 20,993.08 = 8,588.38 : x
  2. Step 2: Convert to fraction form
    15,212.38/20,993.08 = 8,588.38/x
  3. Step 3: Cross multiply
    15,212.38x = 20,993.08 × 8,588.38
  4. Step 4: Simplify right side
    15,212.38x = 180,296,443.45
  5. Step 5: Solve for x
    x = 180,296,443.45/15,212.38
  6. Step 6: Final answer
    x = 11,851.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.