Home / 38,879.50-53,660.20-29,431.66

Finding the Fourth Proportional to 38,879.50, 53,660.20 and 29,431.66

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Solution

The fourth proportional to 38,879.50, 53,660.20 and 29,431.66 is: 40,620.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,879.50 : 53,660.20 = 29,431.66 : x
  2. Step 2: Convert to fraction form
    38,879.50/53,660.20 = 29,431.66/x
  3. Step 3: Cross multiply
    38,879.50x = 53,660.20 × 29,431.66
  4. Step 4: Simplify right side
    38,879.50x = 1,579,308,761.93
  5. Step 5: Solve for x
    x = 1,579,308,761.93/38,879.50
  6. Step 6: Final answer
    x = 40,620.60

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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.