Home / 13,391.82-18,480.63-8,086.62

Finding the Fourth Proportional to 13,391.82, 18,480.63 and 8,086.62

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Solution

The fourth proportional to 13,391.82, 18,480.63 and 8,086.62 is: 11,159.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,391.82 : 18,480.63 = 8,086.62 : x
  2. Step 2: Convert to fraction form
    13,391.82/18,480.63 = 8,086.62/x
  3. Step 3: Cross multiply
    13,391.82x = 18,480.63 × 8,086.62
  4. Step 4: Simplify right side
    13,391.82x = 149,445,832.17
  5. Step 5: Solve for x
    x = 149,445,832.17/13,391.82
  6. Step 6: Final answer
    x = 11,159.49

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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.