Home / 9,321.24-13,942.80-8,621.40

Finding the Fourth Proportional to 9,321.24, 13,942.80 and 8,621.40

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Solution

The fourth proportional to 9,321.24, 13,942.80 and 8,621.40 is: 12,895.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,321.24 : 13,942.80 = 8,621.40 : x
  2. Step 2: Convert to fraction form
    9,321.24/13,942.80 = 8,621.40/x
  3. Step 3: Cross multiply
    9,321.24x = 13,942.80 × 8,621.40
  4. Step 4: Simplify right side
    9,321.24x = 120,206,455.92
  5. Step 5: Solve for x
    x = 120,206,455.92/9,321.24
  6. Step 6: Final answer
    x = 12,895.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.