Home / 21,433.11-29,576.54-11,872.71

Finding the Fourth Proportional to 21,433.11, 29,576.54 and 11,872.71

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Solution

The fourth proportional to 21,433.11, 29,576.54 and 11,872.71 is: 16,383.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,433.11 : 29,576.54 = 11,872.71 : x
  2. Step 2: Convert to fraction form
    21,433.11/29,576.54 = 11,872.71/x
  3. Step 3: Cross multiply
    21,433.11x = 29,576.54 × 11,872.71
  4. Step 4: Simplify right side
    21,433.11x = 351,153,711.91
  5. Step 5: Solve for x
    x = 351,153,711.91/21,433.11
  6. Step 6: Final answer
    x = 16,383.71

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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.