Home / 38,678.45-53,379.50-21,682.41

Finding the Fourth Proportional to 38,678.45, 53,379.50 and 21,682.41

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Solution

The fourth proportional to 38,678.45, 53,379.50 and 21,682.41 is: 29,923.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,678.45 : 53,379.50 = 21,682.41 : x
  2. Step 2: Convert to fraction form
    38,678.45/53,379.50 = 21,682.41/x
  3. Step 3: Cross multiply
    38,678.45x = 53,379.50 × 21,682.41
  4. Step 4: Simplify right side
    38,678.45x = 1,157,396,096.18
  5. Step 5: Solve for x
    x = 1,157,396,096.18/38,678.45
  6. Step 6: Final answer
    x = 29,923.54

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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.