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Finding the Fourth Proportional to 28,801.26, 43,201.90 and 12,385.26

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Solution

The fourth proportional to 28,801.26, 43,201.90 and 12,385.26 is: 18,577.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,801.26 : 43,201.90 = 12,385.26 : x
  2. Step 2: Convert to fraction form
    28,801.26/43,201.90 = 12,385.26/x
  3. Step 3: Cross multiply
    28,801.26x = 43,201.90 × 12,385.26
  4. Step 4: Simplify right side
    28,801.26x = 535,066,763.99
  5. Step 5: Solve for x
    x = 535,066,763.99/28,801.26
  6. Step 6: Final answer
    x = 18,577.89

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.