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Finding the Fourth Proportional to 28,759, 43,138.50 and 9,303

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Solution

The fourth proportional to 28,759, 43,138.50 and 9,303 is: 13,954.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,759 : 43,138.50 = 9,303 : x
  2. Step 2: Convert to fraction form
    28,759/43,138.50 = 9,303/x
  3. Step 3: Cross multiply
    28,759x = 43,138.50 × 9,303
  4. Step 4: Simplify right side
    28,759x = 401,317,465.50
  5. Step 5: Solve for x
    x = 401,317,465.50/28,759
  6. Step 6: Final answer
    x = 13,954.50

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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.