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Finding the Fourth Proportional to 21,163, 29,204.94 and 11,732.17

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Solution

The fourth proportional to 21,163, 29,204.94 and 11,732.17 is: 16,190.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,163 : 29,204.94 = 11,732.17 : x
  2. Step 2: Convert to fraction form
    21,163/29,204.94 = 11,732.17/x
  3. Step 3: Cross multiply
    21,163x = 29,204.94 × 11,732.17
  4. Step 4: Simplify right side
    21,163x = 342,637,320.92
  5. Step 5: Solve for x
    x = 342,637,320.92/21,163
  6. Step 6: Final answer
    x = 16,190.39

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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.