Home / 12,215.68-16,858.20-6,910.72

Finding the Fourth Proportional to 12,215.68, 16,858.20 and 6,910.72

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Solution

The fourth proportional to 12,215.68, 16,858.20 and 6,910.72 is: 9,537.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,215.68 : 16,858.20 = 6,910.72 : x
  2. Step 2: Convert to fraction form
    12,215.68/16,858.20 = 6,910.72/x
  3. Step 3: Cross multiply
    12,215.68x = 16,858.20 × 6,910.72
  4. Step 4: Simplify right side
    12,215.68x = 116,502,299.90
  5. Step 5: Solve for x
    x = 116,502,299.90/12,215.68
  6. Step 6: Final answer
    x = 9,537.11

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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.