Home / 13,619.40-18,794.59-7,651.18

Finding the Fourth Proportional to 13,619.40, 18,794.59 and 7,651.18

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Solution

The fourth proportional to 13,619.40, 18,794.59 and 7,651.18 is: 10,558.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,619.40 : 18,794.59 = 7,651.18 : x
  2. Step 2: Convert to fraction form
    13,619.40/18,794.59 = 7,651.18/x
  3. Step 3: Cross multiply
    13,619.40x = 18,794.59 × 7,651.18
  4. Step 4: Simplify right side
    13,619.40x = 143,800,791.12
  5. Step 5: Solve for x
    x = 143,800,791.12/13,619.40
  6. Step 6: Final answer
    x = 10,558.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.