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Finding the Fourth Proportional to 12,651.66, 17,453.88 and 8,175.87

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Solution

The fourth proportional to 12,651.66, 17,453.88 and 8,175.87 is: 11,279.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,651.66 : 17,453.88 = 8,175.87 : x
  2. Step 2: Convert to fraction form
    12,651.66/17,453.88 = 8,175.87/x
  3. Step 3: Cross multiply
    12,651.66x = 17,453.88 × 8,175.87
  4. Step 4: Simplify right side
    12,651.66x = 142,700,653.88
  5. Step 5: Solve for x
    x = 142,700,653.88/12,651.66
  6. Step 6: Final answer
    x = 11,279.20

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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.