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Finding the Fourth Proportional to 21,137.30, 29,103.08 and 17,943.98

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Solution

The fourth proportional to 21,137.30, 29,103.08 and 17,943.98 is: 24,706.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,137.30 : 29,103.08 = 17,943.98 : x
  2. Step 2: Convert to fraction form
    21,137.30/29,103.08 = 17,943.98/x
  3. Step 3: Cross multiply
    21,137.30x = 29,103.08 × 17,943.98
  4. Step 4: Simplify right side
    21,137.30x = 522,225,085.46
  5. Step 5: Solve for x
    x = 522,225,085.46/21,137.30
  6. Step 6: Final answer
    x = 24,706.33

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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.