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Finding the Fourth Proportional to 28,896.60, 43,346.10 and 9,174.60

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Solution

The fourth proportional to 28,896.60, 43,346.10 and 9,174.60 is: 13,762.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,896.60 : 43,346.10 = 9,174.60 : x
  2. Step 2: Convert to fraction form
    28,896.60/43,346.10 = 9,174.60/x
  3. Step 3: Cross multiply
    28,896.60x = 43,346.10 × 9,174.60
  4. Step 4: Simplify right side
    28,896.60x = 397,683,129.06
  5. Step 5: Solve for x
    x = 397,683,129.06/28,896.60
  6. Step 6: Final answer
    x = 13,762.28

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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.