Home / 21,963.44-30,280.20-18,172.64

Finding the Fourth Proportional to 21,963.44, 30,280.20 and 18,172.64

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Solution

The fourth proportional to 21,963.44, 30,280.20 and 18,172.64 is: 25,053.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,963.44 : 30,280.20 = 18,172.64 : x
  2. Step 2: Convert to fraction form
    21,963.44/30,280.20 = 18,172.64/x
  3. Step 3: Cross multiply
    21,963.44x = 30,280.20 × 18,172.64
  4. Step 4: Simplify right side
    21,963.44x = 550,271,173.73
  5. Step 5: Solve for x
    x = 550,271,173.73/21,963.44
  6. Step 6: Final answer
    x = 25,053.96

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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.