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Finding the Fourth Proportional to 19,150, 28,736.40 and 8,762.56

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Solution

The fourth proportional to 19,150, 28,736.40 and 8,762.56 is: 13,149.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,150 : 28,736.40 = 8,762.56 : x
  2. Step 2: Convert to fraction form
    19,150/28,736.40 = 8,762.56/x
  3. Step 3: Cross multiply
    19,150x = 28,736.40 × 8,762.56
  4. Step 4: Simplify right side
    19,150x = 251,804,429.18
  5. Step 5: Solve for x
    x = 251,804,429.18/19,150
  6. Step 6: Final answer
    x = 13,149.06

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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.