Home / 13,619.36-18,796.38-7,651.28

Finding the Fourth Proportional to 13,619.36, 18,796.38 and 7,651.28

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Solution

The fourth proportional to 13,619.36, 18,796.38 and 7,651.28 is: 10,559.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,619.36 : 18,796.38 = 7,651.28 : x
  2. Step 2: Convert to fraction form
    13,619.36/18,796.38 = 7,651.28/x
  3. Step 3: Cross multiply
    13,619.36x = 18,796.38 × 7,651.28
  4. Step 4: Simplify right side
    13,619.36x = 143,816,366.37
  5. Step 5: Solve for x
    x = 143,816,366.37/13,619.36
  6. Step 6: Final answer
    x = 10,559.70

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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.