Home / 28,601.15-39,446.19-20,131.31

Finding the Fourth Proportional to 28,601.15, 39,446.19 and 20,131.31

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Solution

The fourth proportional to 28,601.15, 39,446.19 and 20,131.31 is: 27,764.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,601.15 : 39,446.19 = 20,131.31 : x
  2. Step 2: Convert to fraction form
    28,601.15/39,446.19 = 20,131.31/x
  3. Step 3: Cross multiply
    28,601.15x = 39,446.19 × 20,131.31
  4. Step 4: Simplify right side
    28,601.15x = 794,103,577.82
  5. Step 5: Solve for x
    x = 794,103,577.82/28,601.15
  6. Step 6: Final answer
    x = 27,764.74

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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.