Home / 12,204.78-16,837-7,168.90

Finding the Fourth Proportional to 12,204.78, 16,837 and 7,168.90

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Solution

The fourth proportional to 12,204.78, 16,837 and 7,168.90 is: 9,889.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,204.78 : 16,837 = 7,168.90 : x
  2. Step 2: Convert to fraction form
    12,204.78/16,837 = 7,168.90/x
  3. Step 3: Cross multiply
    12,204.78x = 16,837 × 7,168.90
  4. Step 4: Simplify right side
    12,204.78x = 120,702,769.30
  5. Step 5: Solve for x
    x = 120,702,769.30/12,204.78
  6. Step 6: Final answer
    x = 9,889.79

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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.