Home / 20,745.68-28,630.74-11,795.99

Finding the Fourth Proportional to 20,745.68, 28,630.74 and 11,795.99

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Solution

The fourth proportional to 20,745.68, 28,630.74 and 11,795.99 is: 16,279.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,745.68 : 28,630.74 = 11,795.99 : x
  2. Step 2: Convert to fraction form
    20,745.68/28,630.74 = 11,795.99/x
  3. Step 3: Cross multiply
    20,745.68x = 28,630.74 × 11,795.99
  4. Step 4: Simplify right side
    20,745.68x = 337,727,779.58
  5. Step 5: Solve for x
    x = 337,727,779.58/20,745.68
  6. Step 6: Final answer
    x = 16,279.43

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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.