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Finding the Fourth Proportional to 12,758.97, 17,612.30 and 8,508.50

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Solution

The fourth proportional to 12,758.97, 17,612.30 and 8,508.50 is: 11,745.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,758.97 : 17,612.30 = 8,508.50 : x
  2. Step 2: Convert to fraction form
    12,758.97/17,612.30 = 8,508.50/x
  3. Step 3: Cross multiply
    12,758.97x = 17,612.30 × 8,508.50
  4. Step 4: Simplify right side
    12,758.97x = 149,854,187.76
  5. Step 5: Solve for x
    x = 149,854,187.76/12,758.97
  6. Step 6: Final answer
    x = 11,745.01

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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.