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Finding the Fourth Proportional to 12,168.46, 16,800.07 and 9,330.38

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Solution

The fourth proportional to 12,168.46, 16,800.07 and 9,330.38 is: 12,881.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,168.46 : 16,800.07 = 9,330.38 : x
  2. Step 2: Convert to fraction form
    12,168.46/16,800.07 = 9,330.38/x
  3. Step 3: Cross multiply
    12,168.46x = 16,800.07 × 9,330.38
  4. Step 4: Simplify right side
    12,168.46x = 156,750,999.79
  5. Step 5: Solve for x
    x = 156,750,999.79/12,168.46
  6. Step 6: Final answer
    x = 12,881.75

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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.