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Finding the Fourth Proportional to 21,143.19, 29,170.34 and 12,062.02

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Solution

The fourth proportional to 21,143.19, 29,170.34 and 12,062.02 is: 16,641.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,143.19 : 29,170.34 = 12,062.02 : x
  2. Step 2: Convert to fraction form
    21,143.19/29,170.34 = 12,062.02/x
  3. Step 3: Cross multiply
    21,143.19x = 29,170.34 × 12,062.02
  4. Step 4: Simplify right side
    21,143.19x = 351,853,224.49
  5. Step 5: Solve for x
    x = 351,853,224.49/21,143.19
  6. Step 6: Final answer
    x = 16,641.44

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.