Home / 13,621.38-18,803.94-9,091.56

Finding the Fourth Proportional to 13,621.38, 18,803.94 and 9,091.56

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Solution

The fourth proportional to 13,621.38, 18,803.94 and 9,091.56 is: 12,550.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,621.38 : 18,803.94 = 9,091.56 : x
  2. Step 2: Convert to fraction form
    13,621.38/18,803.94 = 9,091.56/x
  3. Step 3: Cross multiply
    13,621.38x = 18,803.94 × 9,091.56
  4. Step 4: Simplify right side
    13,621.38x = 170,957,148.75
  5. Step 5: Solve for x
    x = 170,957,148.75/13,621.38
  6. Step 6: Final answer
    x = 12,550.65

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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.