Home / 18,409.36-25,403.71-10,855.33

Finding the Fourth Proportional to 18,409.36, 25,403.71 and 10,855.33

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Solution

The fourth proportional to 18,409.36, 25,403.71 and 10,855.33 is: 14,979.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,409.36 : 25,403.71 = 10,855.33 : x
  2. Step 2: Convert to fraction form
    18,409.36/25,403.71 = 10,855.33/x
  3. Step 3: Cross multiply
    18,409.36x = 25,403.71 × 10,855.33
  4. Step 4: Simplify right side
    18,409.36x = 275,765,655.27
  5. Step 5: Solve for x
    x = 275,765,655.27/18,409.36
  6. Step 6: Final answer
    x = 14,979.64

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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.