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Finding the Fourth Proportional to 11,002.80, 16,504.20 and 6,869.10

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Solution

The fourth proportional to 11,002.80, 16,504.20 and 6,869.10 is: 10,303.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,002.80 : 16,504.20 = 6,869.10 : x
  2. Step 2: Convert to fraction form
    11,002.80/16,504.20 = 6,869.10/x
  3. Step 3: Cross multiply
    11,002.80x = 16,504.20 × 6,869.10
  4. Step 4: Simplify right side
    11,002.80x = 113,369,000.22
  5. Step 5: Solve for x
    x = 113,369,000.22/11,002.80
  6. Step 6: Final answer
    x = 10,303.65

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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.