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Finding the Fourth Proportional to 21,673.63, 29,912.04 and 12,242.80

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Solution

The fourth proportional to 21,673.63, 29,912.04 and 12,242.80 is: 16,896.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,673.63 : 29,912.04 = 12,242.80 : x
  2. Step 2: Convert to fraction form
    21,673.63/29,912.04 = 12,242.80/x
  3. Step 3: Cross multiply
    21,673.63x = 29,912.04 × 12,242.80
  4. Step 4: Simplify right side
    21,673.63x = 366,206,943.14
  5. Step 5: Solve for x
    x = 366,206,943.14/21,673.63
  6. Step 6: Final answer
    x = 16,896.43

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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.