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Finding the Fourth Proportional to 11,266.80, 16,900.20 and 9,881.70

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Solution

The fourth proportional to 11,266.80, 16,900.20 and 9,881.70 is: 14,822.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,266.80 : 16,900.20 = 9,881.70 : x
  2. Step 2: Convert to fraction form
    11,266.80/16,900.20 = 9,881.70/x
  3. Step 3: Cross multiply
    11,266.80x = 16,900.20 × 9,881.70
  4. Step 4: Simplify right side
    11,266.80x = 167,002,706.34
  5. Step 5: Solve for x
    x = 167,002,706.34/11,266.80
  6. Step 6: Final answer
    x = 14,822.55

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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.