Home / 13,435.44-18,542.16-8,131.68

Finding the Fourth Proportional to 13,435.44, 18,542.16 and 8,131.68

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Solution

The fourth proportional to 13,435.44, 18,542.16 and 8,131.68 is: 11,222.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,435.44 : 18,542.16 = 8,131.68 : x
  2. Step 2: Convert to fraction form
    13,435.44/18,542.16 = 8,131.68/x
  3. Step 3: Cross multiply
    13,435.44x = 18,542.16 × 8,131.68
  4. Step 4: Simplify right side
    13,435.44x = 150,778,911.63
  5. Step 5: Solve for x
    x = 150,778,911.63/13,435.44
  6. Step 6: Final answer
    x = 11,222.48

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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.