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Finding the Fourth Proportional to 12,236.91, 16,895.06 and 9,399.21

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Solution

The fourth proportional to 12,236.91, 16,895.06 and 9,399.21 is: 12,977.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,236.91 : 16,895.06 = 9,399.21 : x
  2. Step 2: Convert to fraction form
    12,236.91/16,895.06 = 9,399.21/x
  3. Step 3: Cross multiply
    12,236.91x = 16,895.06 × 9,399.21
  4. Step 4: Simplify right side
    12,236.91x = 158,800,151.17
  5. Step 5: Solve for x
    x = 158,800,151.17/12,236.91
  6. Step 6: Final answer
    x = 12,977.15

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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.