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Finding the Fourth Proportional to 21,044.24, 29,039.92 and 13,086.24

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Solution

The fourth proportional to 21,044.24, 29,039.92 and 13,086.24 is: 18,058.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,044.24 : 29,039.92 = 13,086.24 : x
  2. Step 2: Convert to fraction form
    21,044.24/29,039.92 = 13,086.24/x
  3. Step 3: Cross multiply
    21,044.24x = 29,039.92 × 13,086.24
  4. Step 4: Simplify right side
    21,044.24x = 380,023,362.70
  5. Step 5: Solve for x
    x = 380,023,362.70/21,044.24
  6. Step 6: Final answer
    x = 18,058.31

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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.