Home / 11,612.88-17,421.42-4,227.68

Finding the Fourth Proportional to 11,612.88, 17,421.42 and 4,227.68

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Solution

The fourth proportional to 11,612.88, 17,421.42 and 4,227.68 is: 6,342.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,612.88 : 17,421.42 = 4,227.68 : x
  2. Step 2: Convert to fraction form
    11,612.88/17,421.42 = 4,227.68/x
  3. Step 3: Cross multiply
    11,612.88x = 17,421.42 × 4,227.68
  4. Step 4: Simplify right side
    11,612.88x = 73,652,188.91
  5. Step 5: Solve for x
    x = 73,652,188.91/11,612.88
  6. Step 6: Final answer
    x = 6,342.28

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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.