Home / 28,103.45-38,790.84-18,550.31

Finding the Fourth Proportional to 28,103.45, 38,790.84 and 18,550.31

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Solution

The fourth proportional to 28,103.45, 38,790.84 and 18,550.31 is: 25,604.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,103.45 : 38,790.84 = 18,550.31 : x
  2. Step 2: Convert to fraction form
    28,103.45/38,790.84 = 18,550.31/x
  3. Step 3: Cross multiply
    28,103.45x = 38,790.84 × 18,550.31
  4. Step 4: Simplify right side
    28,103.45x = 719,582,107.16
  5. Step 5: Solve for x
    x = 719,582,107.16/28,103.45
  6. Step 6: Final answer
    x = 25,604.76

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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.