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Finding the Fourth Proportional to 22,745.80, 34,053.90 and 20,153.80

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Solution

The fourth proportional to 22,745.80, 34,053.90 and 20,153.80 is: 30,173.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,745.80 : 34,053.90 = 20,153.80 : x
  2. Step 2: Convert to fraction form
    22,745.80/34,053.90 = 20,153.80/x
  3. Step 3: Cross multiply
    22,745.80x = 34,053.90 × 20,153.80
  4. Step 4: Simplify right side
    22,745.80x = 686,315,489.82
  5. Step 5: Solve for x
    x = 686,315,489.82/22,745.80
  6. Step 6: Final answer
    x = 30,173.28

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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.