Home / 13,621.94-20,434.08-3,761.22

Finding the Fourth Proportional to 13,621.94, 20,434.08 and 3,761.22

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Solution

The fourth proportional to 13,621.94, 20,434.08 and 3,761.22 is: 5,642.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,621.94 : 20,434.08 = 3,761.22 : x
  2. Step 2: Convert to fraction form
    13,621.94/20,434.08 = 3,761.22/x
  3. Step 3: Cross multiply
    13,621.94x = 20,434.08 × 3,761.22
  4. Step 4: Simplify right side
    13,621.94x = 76,856,968.21
  5. Step 5: Solve for x
    x = 76,856,968.21/13,621.94
  6. Step 6: Final answer
    x = 5,642.15

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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.