Home / 28,692.35-39,584.35-21,156.52

Finding the Fourth Proportional to 28,692.35, 39,584.35 and 21,156.52

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Solution

The fourth proportional to 28,692.35, 39,584.35 and 21,156.52 is: 29,187.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,692.35 : 39,584.35 = 21,156.52 : x
  2. Step 2: Convert to fraction form
    28,692.35/39,584.35 = 21,156.52/x
  3. Step 3: Cross multiply
    28,692.35x = 39,584.35 × 21,156.52
  4. Step 4: Simplify right side
    28,692.35x = 837,467,092.46
  5. Step 5: Solve for x
    x = 837,467,092.46/28,692.35
  6. Step 6: Final answer
    x = 29,187.82

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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.