Home / 21,956.20-30,289.58-13,993.47

Finding the Fourth Proportional to 21,956.20, 30,289.58 and 13,993.47

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Solution

The fourth proportional to 21,956.20, 30,289.58 and 13,993.47 is: 19,304.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,956.20 : 30,289.58 = 13,993.47 : x
  2. Step 2: Convert to fraction form
    21,956.20/30,289.58 = 13,993.47/x
  3. Step 3: Cross multiply
    21,956.20x = 30,289.58 × 13,993.47
  4. Step 4: Simplify right side
    21,956.20x = 423,856,329.04
  5. Step 5: Solve for x
    x = 423,856,329.04/21,956.20
  6. Step 6: Final answer
    x = 19,304.63

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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.