Home / 13,239.51-18,273.72-8,200.68

Finding the Fourth Proportional to 13,239.51, 18,273.72 and 8,200.68

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Solution

The fourth proportional to 13,239.51, 18,273.72 and 8,200.68 is: 11,318.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,239.51 : 18,273.72 = 8,200.68 : x
  2. Step 2: Convert to fraction form
    13,239.51/18,273.72 = 8,200.68/x
  3. Step 3: Cross multiply
    13,239.51x = 18,273.72 × 8,200.68
  4. Step 4: Simplify right side
    13,239.51x = 149,856,930.13
  5. Step 5: Solve for x
    x = 149,856,930.13/13,239.51
  6. Step 6: Final answer
    x = 11,318.92

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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.