Home / 19,936.80-29,905.20-11,626.20

Finding the Fourth Proportional to 19,936.80, 29,905.20 and 11,626.20

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Solution

The fourth proportional to 19,936.80, 29,905.20 and 11,626.20 is: 17,439.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,936.80 : 29,905.20 = 11,626.20 : x
  2. Step 2: Convert to fraction form
    19,936.80/29,905.20 = 11,626.20/x
  3. Step 3: Cross multiply
    19,936.80x = 29,905.20 × 11,626.20
  4. Step 4: Simplify right side
    19,936.80x = 347,683,836.24
  5. Step 5: Solve for x
    x = 347,683,836.24/19,936.80
  6. Step 6: Final answer
    x = 17,439.30

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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.