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Finding the Fourth Proportional to 17,212.05, 25,785.15 and 11,638.05

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Solution

The fourth proportional to 17,212.05, 25,785.15 and 11,638.05 is: 17,434.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,212.05 : 25,785.15 = 11,638.05 : x
  2. Step 2: Convert to fraction form
    17,212.05/25,785.15 = 11,638.05/x
  3. Step 3: Cross multiply
    17,212.05x = 25,785.15 × 11,638.05
  4. Step 4: Simplify right side
    17,212.05x = 300,088,864.96
  5. Step 5: Solve for x
    x = 300,088,864.96/17,212.05
  6. Step 6: Final answer
    x = 17,434.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.