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Finding the Fourth Proportional to 21,187, 29,237.05 and 11,626.66

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Solution

The fourth proportional to 21,187, 29,237.05 and 11,626.66 is: 16,044.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,187 : 29,237.05 = 11,626.66 : x
  2. Step 2: Convert to fraction form
    21,187/29,237.05 = 11,626.66/x
  3. Step 3: Cross multiply
    21,187x = 29,237.05 × 11,626.66
  4. Step 4: Simplify right side
    21,187x = 339,929,239.75
  5. Step 5: Solve for x
    x = 339,929,239.75/21,187
  6. Step 6: Final answer
    x = 16,044.24

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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.