Home / 39,386.37-54,353.19-21,481.42

Finding the Fourth Proportional to 39,386.37, 54,353.19 and 21,481.42

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Solution

The fourth proportional to 39,386.37, 54,353.19 and 21,481.42 is: 29,644.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,386.37 : 54,353.19 = 21,481.42 : x
  2. Step 2: Convert to fraction form
    39,386.37/54,353.19 = 21,481.42/x
  3. Step 3: Cross multiply
    39,386.37x = 54,353.19 × 21,481.42
  4. Step 4: Simplify right side
    39,386.37x = 1,167,583,702.73
  5. Step 5: Solve for x
    x = 1,167,583,702.73/39,386.37
  6. Step 6: Final answer
    x = 29,644.36

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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.