Home / 12,215.52-16,855.60-6,910.21

Finding the Fourth Proportional to 12,215.52, 16,855.60 and 6,910.21

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Solution

The fourth proportional to 12,215.52, 16,855.60 and 6,910.21 is: 9,535.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,215.52 : 16,855.60 = 6,910.21 : x
  2. Step 2: Convert to fraction form
    12,215.52/16,855.60 = 6,910.21/x
  3. Step 3: Cross multiply
    12,215.52x = 16,855.60 × 6,910.21
  4. Step 4: Simplify right side
    12,215.52x = 116,475,735.68
  5. Step 5: Solve for x
    x = 116,475,735.68/12,215.52
  6. Step 6: Final answer
    x = 9,535.06

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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.