Home / 18,621.36-27,904.68-13,919.28

Finding the Fourth Proportional to 18,621.36, 27,904.68 and 13,919.28

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Solution

The fourth proportional to 18,621.36, 27,904.68 and 13,919.28 is: 20,858.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,621.36 : 27,904.68 = 13,919.28 : x
  2. Step 2: Convert to fraction form
    18,621.36/27,904.68 = 13,919.28/x
  3. Step 3: Cross multiply
    18,621.36x = 27,904.68 × 13,919.28
  4. Step 4: Simplify right side
    18,621.36x = 388,413,054.23
  5. Step 5: Solve for x
    x = 388,413,054.23/18,621.36
  6. Step 6: Final answer
    x = 20,858.47

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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.