Home / 13,758.14-20,642.68-4,399.60

Finding the Fourth Proportional to 13,758.14, 20,642.68 and 4,399.60

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Solution

The fourth proportional to 13,758.14, 20,642.68 and 4,399.60 is: 6,601.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,758.14 : 20,642.68 = 4,399.60 : x
  2. Step 2: Convert to fraction form
    13,758.14/20,642.68 = 4,399.60/x
  3. Step 3: Cross multiply
    13,758.14x = 20,642.68 × 4,399.60
  4. Step 4: Simplify right side
    13,758.14x = 90,819,534.93
  5. Step 5: Solve for x
    x = 90,819,534.93/13,758.14
  6. Step 6: Final answer
    x = 6,601.15

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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.