Home / 12,620.90-17,434.52-11,956.61

Finding the Fourth Proportional to 12,620.90, 17,434.52 and 11,956.61

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Solution

The fourth proportional to 12,620.90, 17,434.52 and 11,956.61 is: 16,516.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,620.90 : 17,434.52 = 11,956.61 : x
  2. Step 2: Convert to fraction form
    12,620.90/17,434.52 = 11,956.61/x
  3. Step 3: Cross multiply
    12,620.90x = 17,434.52 × 11,956.61
  4. Step 4: Simplify right side
    12,620.90x = 208,457,609.22
  5. Step 5: Solve for x
    x = 208,457,609.22/12,620.90
  6. Step 6: Final answer
    x = 16,516.86

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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.