Home / 18,621.21-25,695.75-10,963.28

Finding the Fourth Proportional to 18,621.21, 25,695.75 and 10,963.28

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Solution

The fourth proportional to 18,621.21, 25,695.75 and 10,963.28 is: 15,128.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,621.21 : 25,695.75 = 10,963.28 : x
  2. Step 2: Convert to fraction form
    18,621.21/25,695.75 = 10,963.28/x
  3. Step 3: Cross multiply
    18,621.21x = 25,695.75 × 10,963.28
  4. Step 4: Simplify right side
    18,621.21x = 281,709,573.58
  5. Step 5: Solve for x
    x = 281,709,573.58/18,621.21
  6. Step 6: Final answer
    x = 15,128.42

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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.