Home / 12,472.21-17,213.79-11,911.69

Finding the Fourth Proportional to 12,472.21, 17,213.79 and 11,911.69

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Solution

The fourth proportional to 12,472.21, 17,213.79 and 11,911.69 is: 16,440.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,472.21 : 17,213.79 = 11,911.69 : x
  2. Step 2: Convert to fraction form
    12,472.21/17,213.79 = 11,911.69/x
  3. Step 3: Cross multiply
    12,472.21x = 17,213.79 × 11,911.69
  4. Step 4: Simplify right side
    12,472.21x = 205,045,330.21
  5. Step 5: Solve for x
    x = 205,045,330.21/12,472.21
  6. Step 6: Final answer
    x = 16,440.18

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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.