Home / 21,760.80-32,568.30-19,136.40

Finding the Fourth Proportional to 21,760.80, 32,568.30 and 19,136.40

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Solution

The fourth proportional to 21,760.80, 32,568.30 and 19,136.40 is: 28,640.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,760.80 : 32,568.30 = 19,136.40 : x
  2. Step 2: Convert to fraction form
    21,760.80/32,568.30 = 19,136.40/x
  3. Step 3: Cross multiply
    21,760.80x = 32,568.30 × 19,136.40
  4. Step 4: Simplify right side
    21,760.80x = 623,240,016.12
  5. Step 5: Solve for x
    x = 623,240,016.12/21,760.80
  6. Step 6: Final answer
    x = 28,640.49

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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.