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Finding the Fourth Proportional to 29,058, 40,100.04 and 15,810

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Solution

The fourth proportional to 29,058, 40,100.04 and 15,810 is: 21,817.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,058 : 40,100.04 = 15,810 : x
  2. Step 2: Convert to fraction form
    29,058/40,100.04 = 15,810/x
  3. Step 3: Cross multiply
    29,058x = 40,100.04 × 15,810
  4. Step 4: Simplify right side
    29,058x = 633,981,632.40
  5. Step 5: Solve for x
    x = 633,981,632.40/29,058
  6. Step 6: Final answer
    x = 21,817.80

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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.