Home / 20,745.07-28,620.02-12,773.45

Finding the Fourth Proportional to 20,745.07, 28,620.02 and 12,773.45

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Solution

The fourth proportional to 20,745.07, 28,620.02 and 12,773.45 is: 17,622.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,745.07 : 28,620.02 = 12,773.45 : x
  2. Step 2: Convert to fraction form
    20,745.07/28,620.02 = 12,773.45/x
  3. Step 3: Cross multiply
    20,745.07x = 28,620.02 × 12,773.45
  4. Step 4: Simplify right side
    20,745.07x = 365,576,497.95
  5. Step 5: Solve for x
    x = 365,576,497.95/20,745.07
  6. Step 6: Final answer
    x = 17,622.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.