Home / 13,651.71-20,473.75-3,788.64

Finding the Fourth Proportional to 13,651.71, 20,473.75 and 3,788.64

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Solution

The fourth proportional to 13,651.71, 20,473.75 and 3,788.64 is: 5,681.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,651.71 : 20,473.75 = 3,788.64 : x
  2. Step 2: Convert to fraction form
    13,651.71/20,473.75 = 3,788.64/x
  3. Step 3: Cross multiply
    13,651.71x = 20,473.75 × 3,788.64
  4. Step 4: Simplify right side
    13,651.71x = 77,567,668.20
  5. Step 5: Solve for x
    x = 77,567,668.20/13,651.71
  6. Step 6: Final answer
    x = 5,681.90

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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.