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Finding the Fourth Proportional to 38,745.33, 53,464.02 and 21,745.86

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Solution

The fourth proportional to 38,745.33, 53,464.02 and 21,745.86 is: 30,006.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,745.33 : 53,464.02 = 21,745.86 : x
  2. Step 2: Convert to fraction form
    38,745.33/53,464.02 = 21,745.86/x
  3. Step 3: Cross multiply
    38,745.33x = 53,464.02 × 21,745.86
  4. Step 4: Simplify right side
    38,745.33x = 1,162,621,093.96
  5. Step 5: Solve for x
    x = 1,162,621,093.96/38,745.33
  6. Step 6: Final answer
    x = 30,006.74

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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.