Home / 13,668.39-20,502.60-3,807.69

Finding the Fourth Proportional to 13,668.39, 20,502.60 and 3,807.69

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Solution

The fourth proportional to 13,668.39, 20,502.60 and 3,807.69 is: 5,711.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,668.39 : 20,502.60 = 3,807.69 : x
  2. Step 2: Convert to fraction form
    13,668.39/20,502.60 = 3,807.69/x
  3. Step 3: Cross multiply
    13,668.39x = 20,502.60 × 3,807.69
  4. Step 4: Simplify right side
    13,668.39x = 78,067,544.99
  5. Step 5: Solve for x
    x = 78,067,544.99/13,668.39
  6. Step 6: Final answer
    x = 5,711.54

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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.