Home / 13,617.54-18,791.73-8,321.22

Finding the Fourth Proportional to 13,617.54, 18,791.73 and 8,321.22

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Solution

The fourth proportional to 13,617.54, 18,791.73 and 8,321.22 is: 11,482.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,617.54 : 18,791.73 = 8,321.22 : x
  2. Step 2: Convert to fraction form
    13,617.54/18,791.73 = 8,321.22/x
  3. Step 3: Cross multiply
    13,617.54x = 18,791.73 × 8,321.22
  4. Step 4: Simplify right side
    13,617.54x = 156,370,119.51
  5. Step 5: Solve for x
    x = 156,370,119.51/13,617.54
  6. Step 6: Final answer
    x = 11,482.99

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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.