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Finding the Fourth Proportional to 21,062, 29,064.16 and 11,630.48

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Solution

The fourth proportional to 21,062, 29,064.16 and 11,630.48 is: 16,049.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,062 : 29,064.16 = 11,630.48 : x
  2. Step 2: Convert to fraction form
    21,062/29,064.16 = 11,630.48/x
  3. Step 3: Cross multiply
    21,062x = 29,064.16 × 11,630.48
  4. Step 4: Simplify right side
    21,062x = 338,030,131.60
  5. Step 5: Solve for x
    x = 338,030,131.60/21,062
  6. Step 6: Final answer
    x = 16,049.29

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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.