Home / 13,621.76-20,431.10-3,762.44

Finding the Fourth Proportional to 13,621.76, 20,431.10 and 3,762.44

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Solution

The fourth proportional to 13,621.76, 20,431.10 and 3,762.44 is: 5,643.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,621.76 : 20,431.10 = 3,762.44 : x
  2. Step 2: Convert to fraction form
    13,621.76/20,431.10 = 3,762.44/x
  3. Step 3: Cross multiply
    13,621.76x = 20,431.10 × 3,762.44
  4. Step 4: Simplify right side
    13,621.76x = 76,870,787.88
  5. Step 5: Solve for x
    x = 76,870,787.88/13,621.76
  6. Step 6: Final answer
    x = 5,643.23

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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.