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Finding the Fourth Proportional to 38,600.30, 53,269.37 and 21,604.40

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Solution

The fourth proportional to 38,600.30, 53,269.37 and 21,604.40 is: 29,814.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,600.30 : 53,269.37 = 21,604.40 : x
  2. Step 2: Convert to fraction form
    38,600.30/53,269.37 = 21,604.40/x
  3. Step 3: Cross multiply
    38,600.30x = 53,269.37 × 21,604.40
  4. Step 4: Simplify right side
    38,600.30x = 1,150,852,777.23
  5. Step 5: Solve for x
    x = 1,150,852,777.23/38,600.30
  6. Step 6: Final answer
    x = 29,814.61

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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.