Home / 13,447.26-18,558.05-8,142.57

Finding the Fourth Proportional to 13,447.26, 18,558.05 and 8,142.57

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Solution

The fourth proportional to 13,447.26, 18,558.05 and 8,142.57 is: 11,237.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,447.26 : 18,558.05 = 8,142.57 : x
  2. Step 2: Convert to fraction form
    13,447.26/18,558.05 = 8,142.57/x
  3. Step 3: Cross multiply
    13,447.26x = 18,558.05 × 8,142.57
  4. Step 4: Simplify right side
    13,447.26x = 151,110,180.48
  5. Step 5: Solve for x
    x = 151,110,180.48/13,447.26
  6. Step 6: Final answer
    x = 11,237.25

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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.