Home / 12,126.96-18,196.11-6,280.38

Finding the Fourth Proportional to 12,126.96, 18,196.11 and 6,280.38

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Solution

The fourth proportional to 12,126.96, 18,196.11 and 6,280.38 is: 9,423.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,126.96 : 18,196.11 = 6,280.38 : x
  2. Step 2: Convert to fraction form
    12,126.96/18,196.11 = 6,280.38/x
  3. Step 3: Cross multiply
    12,126.96x = 18,196.11 × 6,280.38
  4. Step 4: Simplify right side
    12,126.96x = 114,278,485.32
  5. Step 5: Solve for x
    x = 114,278,485.32/12,126.96
  6. Step 6: Final answer
    x = 9,423.51

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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.