Home / 13,121.39-19,682.01-3,260.66

Finding the Fourth Proportional to 13,121.39, 19,682.01 and 3,260.66

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Solution

The fourth proportional to 13,121.39, 19,682.01 and 3,260.66 is: 4,890.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,121.39 : 19,682.01 = 3,260.66 : x
  2. Step 2: Convert to fraction form
    13,121.39/19,682.01 = 3,260.66/x
  3. Step 3: Cross multiply
    13,121.39x = 19,682.01 × 3,260.66
  4. Step 4: Simplify right side
    13,121.39x = 64,176,391.93
  5. Step 5: Solve for x
    x = 64,176,391.93/13,121.39
  6. Step 6: Final answer
    x = 4,890.98

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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.