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Finding the Fourth Proportional to 21,610.22, 29,828.22 and 13,114.94

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Solution

The fourth proportional to 21,610.22, 29,828.22 and 13,114.94 is: 18,102.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,610.22 : 29,828.22 = 13,114.94 : x
  2. Step 2: Convert to fraction form
    21,610.22/29,828.22 = 13,114.94/x
  3. Step 3: Cross multiply
    21,610.22x = 29,828.22 × 13,114.94
  4. Step 4: Simplify right side
    21,610.22x = 391,195,315.61
  5. Step 5: Solve for x
    x = 391,195,315.61/21,610.22
  6. Step 6: Final answer
    x = 18,102.33

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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.