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Finding the Fourth Proportional to 29,121, 40,190.22 and 17,943

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Solution

The fourth proportional to 29,121, 40,190.22 and 17,943 is: 24,763.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,121 : 40,190.22 = 17,943 : x
  2. Step 2: Convert to fraction form
    29,121/40,190.22 = 17,943/x
  3. Step 3: Cross multiply
    29,121x = 40,190.22 × 17,943
  4. Step 4: Simplify right side
    29,121x = 721,133,117.46
  5. Step 5: Solve for x
    x = 721,133,117.46/29,121
  6. Step 6: Final answer
    x = 24,763.34

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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.