Home / 13,727.36-18,936.78-8,683.08

Finding the Fourth Proportional to 13,727.36, 18,936.78 and 8,683.08

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Solution

The fourth proportional to 13,727.36, 18,936.78 and 8,683.08 is: 11,978.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,727.36 : 18,936.78 = 8,683.08 : x
  2. Step 2: Convert to fraction form
    13,727.36/18,936.78 = 8,683.08/x
  3. Step 3: Cross multiply
    13,727.36x = 18,936.78 × 8,683.08
  4. Step 4: Simplify right side
    13,727.36x = 164,429,575.68
  5. Step 5: Solve for x
    x = 164,429,575.68/13,727.36
  6. Step 6: Final answer
    x = 11,978.24

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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.