Home / 21,736.88-30,015.28-13,793.20

Finding the Fourth Proportional to 21,736.88, 30,015.28 and 13,793.20

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Solution

The fourth proportional to 21,736.88, 30,015.28 and 13,793.20 is: 19,046.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,736.88 : 30,015.28 = 13,793.20 : x
  2. Step 2: Convert to fraction form
    21,736.88/30,015.28 = 13,793.20/x
  3. Step 3: Cross multiply
    21,736.88x = 30,015.28 × 13,793.20
  4. Step 4: Simplify right side
    21,736.88x = 414,006,760.10
  5. Step 5: Solve for x
    x = 414,006,760.10/21,736.88
  6. Step 6: Final answer
    x = 19,046.28

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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.