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Finding the Fourth Proportional to 28,735.94, 43,109.37 and 9,009.20

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Solution

The fourth proportional to 28,735.94, 43,109.37 and 9,009.20 is: 13,515.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,735.94 : 43,109.37 = 9,009.20 : x
  2. Step 2: Convert to fraction form
    28,735.94/43,109.37 = 9,009.20/x
  3. Step 3: Cross multiply
    28,735.94x = 43,109.37 × 9,009.20
  4. Step 4: Simplify right side
    28,735.94x = 388,380,720.66
  5. Step 5: Solve for x
    x = 388,380,720.66/28,735.94
  6. Step 6: Final answer
    x = 13,515.51

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1.5x scale

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.