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Finding the Fourth Proportional to 11,215.52, 16,834.30 and 8,558.32

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Solution

The fourth proportional to 11,215.52, 16,834.30 and 8,558.32 is: 12,845.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,215.52 : 16,834.30 = 8,558.32 : x
  2. Step 2: Convert to fraction form
    11,215.52/16,834.30 = 8,558.32/x
  3. Step 3: Cross multiply
    11,215.52x = 16,834.30 × 8,558.32
  4. Step 4: Simplify right side
    11,215.52x = 144,073,326.38
  5. Step 5: Solve for x
    x = 144,073,326.38/11,215.52
  6. Step 6: Final answer
    x = 12,845.89

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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.