Home / 13,616.36-18,790.38-7,647.86

Finding the Fourth Proportional to 13,616.36, 18,790.38 and 7,647.86

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Solution

The fourth proportional to 13,616.36, 18,790.38 and 7,647.86 is: 10,553.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,616.36 : 18,790.38 = 7,647.86 : x
  2. Step 2: Convert to fraction form
    13,616.36/18,790.38 = 7,647.86/x
  3. Step 3: Cross multiply
    13,616.36x = 18,790.38 × 7,647.86
  4. Step 4: Simplify right side
    13,616.36x = 143,706,195.59
  5. Step 5: Solve for x
    x = 143,706,195.59/13,616.36
  6. Step 6: Final answer
    x = 10,553.94

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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.