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Finding the Fourth Proportional to 12,472.71, 17,214.48 and 11,912.19

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Solution

The fourth proportional to 12,472.71, 17,214.48 and 11,912.19 is: 16,440.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,472.71 : 17,214.48 = 11,912.19 : x
  2. Step 2: Convert to fraction form
    12,472.71/17,214.48 = 11,912.19/x
  3. Step 3: Cross multiply
    12,472.71x = 17,214.48 × 11,912.19
  4. Step 4: Simplify right side
    12,472.71x = 205,062,156.51
  5. Step 5: Solve for x
    x = 205,062,156.51/12,472.71
  6. Step 6: Final answer
    x = 16,440.87

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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.