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Finding the Fourth Proportional to 12,244.90, 16,896.81 and 8,472.10

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Solution

The fourth proportional to 12,244.90, 16,896.81 and 8,472.10 is: 11,690.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,244.90 : 16,896.81 = 8,472.10 : x
  2. Step 2: Convert to fraction form
    12,244.90/16,896.81 = 8,472.10/x
  3. Step 3: Cross multiply
    12,244.90x = 16,896.81 × 8,472.10
  4. Step 4: Simplify right side
    12,244.90x = 143,151,464.00
  5. Step 5: Solve for x
    x = 143,151,464.00/12,244.90
  6. Step 6: Final answer
    x = 11,690.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.