Home / 13,922.20-20,883.30-13,274.20

Finding the Fourth Proportional to 13,922.20, 20,883.30 and 13,274.20

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Solution

The fourth proportional to 13,922.20, 20,883.30 and 13,274.20 is: 19,911.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,922.20 : 20,883.30 = 13,274.20 : x
  2. Step 2: Convert to fraction form
    13,922.20/20,883.30 = 13,274.20/x
  3. Step 3: Cross multiply
    13,922.20x = 20,883.30 × 13,274.20
  4. Step 4: Simplify right side
    13,922.20x = 277,209,100.86
  5. Step 5: Solve for x
    x = 277,209,100.86/13,922.20
  6. Step 6: Final answer
    x = 19,911.30

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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.