Home / 13,147.43-18,136.64-9,558.32

Finding the Fourth Proportional to 13,147.43, 18,136.64 and 9,558.32

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Solution

The fourth proportional to 13,147.43, 18,136.64 and 9,558.32 is: 13,185.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,147.43 : 18,136.64 = 9,558.32 : x
  2. Step 2: Convert to fraction form
    13,147.43/18,136.64 = 9,558.32/x
  3. Step 3: Cross multiply
    13,147.43x = 18,136.64 × 9,558.32
  4. Step 4: Simplify right side
    13,147.43x = 173,355,742.06
  5. Step 5: Solve for x
    x = 173,355,742.06/13,147.43
  6. Step 6: Final answer
    x = 13,185.53

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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.