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Finding the Fourth Proportional to 11,453.70, 15,795 and 8,934.91

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Solution

The fourth proportional to 11,453.70, 15,795 and 8,934.91 is: 12,321.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,453.70 : 15,795 = 8,934.91 : x
  2. Step 2: Convert to fraction form
    11,453.70/15,795 = 8,934.91/x
  3. Step 3: Cross multiply
    11,453.70x = 15,795 × 8,934.91
  4. Step 4: Simplify right side
    11,453.70x = 141,126,863.96
  5. Step 5: Solve for x
    x = 141,126,863.96/11,453.70
  6. Step 6: Final answer
    x = 12,321.50

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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.