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Finding the Fourth Proportional to 10,764.80, 16,163.40 and 8,302.40

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Solution

The fourth proportional to 10,764.80, 16,163.40 and 8,302.40 is: 12,466.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,764.80 : 16,163.40 = 8,302.40 : x
  2. Step 2: Convert to fraction form
    10,764.80/16,163.40 = 8,302.40/x
  3. Step 3: Cross multiply
    10,764.80x = 16,163.40 × 8,302.40
  4. Step 4: Simplify right side
    10,764.80x = 134,195,012.16
  5. Step 5: Solve for x
    x = 134,195,012.16/10,764.80
  6. Step 6: Final answer
    x = 12,466.09

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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.