Home / 20,745.72-28,632.82-12,247.34

Finding the Fourth Proportional to 20,745.72, 28,632.82 and 12,247.34

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Solution

The fourth proportional to 20,745.72, 28,632.82 and 12,247.34 is: 16,903.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,745.72 : 28,632.82 = 12,247.34 : x
  2. Step 2: Convert to fraction form
    20,745.72/28,632.82 = 12,247.34/x
  3. Step 3: Cross multiply
    20,745.72x = 28,632.82 × 12,247.34
  4. Step 4: Simplify right side
    20,745.72x = 350,675,677.30
  5. Step 5: Solve for x
    x = 350,675,677.30/20,745.72
  6. Step 6: Final answer
    x = 16,903.52

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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.