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Finding the Fourth Proportional to 28,907.80, 43,344.10 and 11,356.60

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Solution

The fourth proportional to 28,907.80, 43,344.10 and 11,356.60 is: 17,027.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,907.80 : 43,344.10 = 11,356.60 : x
  2. Step 2: Convert to fraction form
    28,907.80/43,344.10 = 11,356.60/x
  3. Step 3: Cross multiply
    28,907.80x = 43,344.10 × 11,356.60
  4. Step 4: Simplify right side
    28,907.80x = 492,241,606.06
  5. Step 5: Solve for x
    x = 492,241,606.06/28,907.80
  6. Step 6: Final answer
    x = 17,027.99

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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.