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Finding the Fourth Proportional to 10,881.81, 16,274.88 and 9,474.84

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Solution

The fourth proportional to 10,881.81, 16,274.88 and 9,474.84 is: 14,170.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,881.81 : 16,274.88 = 9,474.84 : x
  2. Step 2: Convert to fraction form
    10,881.81/16,274.88 = 9,474.84/x
  3. Step 3: Cross multiply
    10,881.81x = 16,274.88 × 9,474.84
  4. Step 4: Simplify right side
    10,881.81x = 154,201,884.02
  5. Step 5: Solve for x
    x = 154,201,884.02/10,881.81
  6. Step 6: Final answer
    x = 14,170.61

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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.