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Finding the Fourth Proportional to 28,820.40, 43,226.95 and 9,100.95

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Solution

The fourth proportional to 28,820.40, 43,226.95 and 9,100.95 is: 13,650.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,820.40 : 43,226.95 = 9,100.95 : x
  2. Step 2: Convert to fraction form
    28,820.40/43,226.95 = 9,100.95/x
  3. Step 3: Cross multiply
    28,820.40x = 43,226.95 × 9,100.95
  4. Step 4: Simplify right side
    28,820.40x = 393,406,310.60
  5. Step 5: Solve for x
    x = 393,406,310.60/28,820.40
  6. Step 6: Final answer
    x = 13,650.27

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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.