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Finding the Fourth Proportional to 21,726.44, 29,982.49 and 11,790.44

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Solution

The fourth proportional to 21,726.44, 29,982.49 and 11,790.44 is: 16,270.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,726.44 : 29,982.49 = 11,790.44 : x
  2. Step 2: Convert to fraction form
    21,726.44/29,982.49 = 11,790.44/x
  3. Step 3: Cross multiply
    21,726.44x = 29,982.49 × 11,790.44
  4. Step 4: Simplify right side
    21,726.44x = 353,506,690.44
  5. Step 5: Solve for x
    x = 353,506,690.44/21,726.44
  6. Step 6: Final answer
    x = 16,270.81

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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.