Home / 13,631.68-18,887.62-13,336.44

Finding the Fourth Proportional to 13,631.68, 18,887.62 and 13,336.44

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Solution

The fourth proportional to 13,631.68, 18,887.62 and 13,336.44 is: 18,478.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,631.68 : 18,887.62 = 13,336.44 : x
  2. Step 2: Convert to fraction form
    13,631.68/18,887.62 = 13,336.44/x
  3. Step 3: Cross multiply
    13,631.68x = 18,887.62 × 13,336.44
  4. Step 4: Simplify right side
    13,631.68x = 251,893,610.87
  5. Step 5: Solve for x
    x = 251,893,610.87/13,631.68
  6. Step 6: Final answer
    x = 18,478.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.