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Finding the Fourth Proportional to 21,662.09, 29,893.70 and 11,726.09

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Solution

The fourth proportional to 21,662.09, 29,893.70 and 11,726.09 is: 16,182.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,662.09 : 29,893.70 = 11,726.09 : x
  2. Step 2: Convert to fraction form
    21,662.09/29,893.70 = 11,726.09/x
  3. Step 3: Cross multiply
    21,662.09x = 29,893.70 × 11,726.09
  4. Step 4: Simplify right side
    21,662.09x = 350,536,158.00
  5. Step 5: Solve for x
    x = 350,536,158.00/21,662.09
  6. Step 6: Final answer
    x = 16,182.01

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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.