Home / 13,768.93-20,653.03-3,908.21

Finding the Fourth Proportional to 13,768.93, 20,653.03 and 3,908.21

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Solution

The fourth proportional to 13,768.93, 20,653.03 and 3,908.21 is: 5,862.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,768.93 : 20,653.03 = 3,908.21 : x
  2. Step 2: Convert to fraction form
    13,768.93/20,653.03 = 3,908.21/x
  3. Step 3: Cross multiply
    13,768.93x = 20,653.03 × 3,908.21
  4. Step 4: Simplify right side
    13,768.93x = 80,716,378.38
  5. Step 5: Solve for x
    x = 80,716,378.38/13,768.93
  6. Step 6: Final answer
    x = 5,862.21

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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.