Home / 13,651.39-20,477.09-3,790.68

Finding the Fourth Proportional to 13,651.39, 20,477.09 and 3,790.68

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Solution

The fourth proportional to 13,651.39, 20,477.09 and 3,790.68 is: 5,686.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,651.39 : 20,477.09 = 3,790.68 : x
  2. Step 2: Convert to fraction form
    13,651.39/20,477.09 = 3,790.68/x
  3. Step 3: Cross multiply
    13,651.39x = 20,477.09 × 3,790.68
  4. Step 4: Simplify right side
    13,651.39x = 77,622,095.52
  5. Step 5: Solve for x
    x = 77,622,095.52/13,651.39
  6. Step 6: Final answer
    x = 5,686.02

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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.