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Finding the Fourth Proportional to 11,212.53, 16,829.79 and 8,555.32

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Solution

The fourth proportional to 11,212.53, 16,829.79 and 8,555.32 is: 12,841.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,212.53 : 16,829.79 = 8,555.32 : x
  2. Step 2: Convert to fraction form
    11,212.53/16,829.79 = 8,555.32/x
  3. Step 3: Cross multiply
    11,212.53x = 16,829.79 × 8,555.32
  4. Step 4: Simplify right side
    11,212.53x = 143,984,238.98
  5. Step 5: Solve for x
    x = 143,984,238.98/11,212.53
  6. Step 6: Final answer
    x = 12,841.37

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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.