Home / 13,447.44-18,558.72-8,143.68

Finding the Fourth Proportional to 13,447.44, 18,558.72 and 8,143.68

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Solution

The fourth proportional to 13,447.44, 18,558.72 and 8,143.68 is: 11,239.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,447.44 : 18,558.72 = 8,143.68 : x
  2. Step 2: Convert to fraction form
    13,447.44/18,558.72 = 8,143.68/x
  3. Step 3: Cross multiply
    13,447.44x = 18,558.72 × 8,143.68
  4. Step 4: Simplify right side
    13,447.44x = 151,136,276.89
  5. Step 5: Solve for x
    x = 151,136,276.89/13,447.44
  6. Step 6: Final answer
    x = 11,239.04

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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.