Home / 20,399.49-30,570.08-11,616.26

Finding the Fourth Proportional to 20,399.49, 30,570.08 and 11,616.26

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Solution

The fourth proportional to 20,399.49, 30,570.08 and 11,616.26 is: 17,407.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,399.49 : 30,570.08 = 11,616.26 : x
  2. Step 2: Convert to fraction form
    20,399.49/30,570.08 = 11,616.26/x
  3. Step 3: Cross multiply
    20,399.49x = 30,570.08 × 11,616.26
  4. Step 4: Simplify right side
    20,399.49x = 355,109,786.57
  5. Step 5: Solve for x
    x = 355,109,786.57/20,399.49
  6. Step 6: Final answer
    x = 17,407.78

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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.