Home / 28,910.40-39,861.36-22,203.60

Finding the Fourth Proportional to 28,910.40, 39,861.36 and 22,203.60

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Solution

The fourth proportional to 28,910.40, 39,861.36 and 22,203.60 is: 30,614.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,910.40 : 39,861.36 = 22,203.60 : x
  2. Step 2: Convert to fraction form
    28,910.40/39,861.36 = 22,203.60/x
  3. Step 3: Cross multiply
    28,910.40x = 39,861.36 × 22,203.60
  4. Step 4: Simplify right side
    28,910.40x = 885,065,692.90
  5. Step 5: Solve for x
    x = 885,065,692.90/28,910.40
  6. Step 6: Final answer
    x = 30,614.09

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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.