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Finding the Fourth Proportional to 29,521, 40,738.98 and 18,343

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Solution

The fourth proportional to 29,521, 40,738.98 and 18,343 is: 25,313.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,521 : 40,738.98 = 18,343 : x
  2. Step 2: Convert to fraction form
    29,521/40,738.98 = 18,343/x
  3. Step 3: Cross multiply
    29,521x = 40,738.98 × 18,343
  4. Step 4: Simplify right side
    29,521x = 747,275,110.14
  5. Step 5: Solve for x
    x = 747,275,110.14/29,521
  6. Step 6: Final answer
    x = 25,313.34

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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.