Home / 28,000.68-38,692.26-20,911.56

Finding the Fourth Proportional to 28,000.68, 38,692.26 and 20,911.56

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Solution

The fourth proportional to 28,000.68, 38,692.26 and 20,911.56 is: 28,896.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,000.68 : 38,692.26 = 20,911.56 : x
  2. Step 2: Convert to fraction form
    28,000.68/38,692.26 = 20,911.56/x
  3. Step 3: Cross multiply
    28,000.68x = 38,692.26 × 20,911.56
  4. Step 4: Simplify right side
    28,000.68x = 809,115,516.53
  5. Step 5: Solve for x
    x = 809,115,516.53/28,000.68
  6. Step 6: Final answer
    x = 28,896.28

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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.