Home / 13,938.42-20,906.88-10,194.06

Finding the Fourth Proportional to 13,938.42, 20,906.88 and 10,194.06

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Solution

The fourth proportional to 13,938.42, 20,906.88 and 10,194.06 is: 15,290.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,938.42 : 20,906.88 = 10,194.06 : x
  2. Step 2: Convert to fraction form
    13,938.42/20,906.88 = 10,194.06/x
  3. Step 3: Cross multiply
    13,938.42x = 20,906.88 × 10,194.06
  4. Step 4: Simplify right side
    13,938.42x = 213,125,989.13
  5. Step 5: Solve for x
    x = 213,125,989.13/13,938.42
  6. Step 6: Final answer
    x = 15,290.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.