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Finding the Fourth Proportional to 38,660.58, 53,348.36 and 21,433.41

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Solution

The fourth proportional to 38,660.58, 53,348.36 and 21,433.41 is: 29,576.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,660.58 : 53,348.36 = 21,433.41 : x
  2. Step 2: Convert to fraction form
    38,660.58/53,348.36 = 21,433.41/x
  3. Step 3: Cross multiply
    38,660.58x = 53,348.36 × 21,433.41
  4. Step 4: Simplify right side
    38,660.58x = 1,143,437,165.54
  5. Step 5: Solve for x
    x = 1,143,437,165.54/38,660.58
  6. Step 6: Final answer
    x = 29,576.31

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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.