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Finding the Fourth Proportional to 28,965.10, 43,449.63 and 9,245.15

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Solution

The fourth proportional to 28,965.10, 43,449.63 and 9,245.15 is: 13,868.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,965.10 : 43,449.63 = 9,245.15 : x
  2. Step 2: Convert to fraction form
    28,965.10/43,449.63 = 9,245.15/x
  3. Step 3: Cross multiply
    28,965.10x = 43,449.63 × 9,245.15
  4. Step 4: Simplify right side
    28,965.10x = 401,698,346.79
  5. Step 5: Solve for x
    x = 401,698,346.79/28,965.10
  6. Step 6: Final answer
    x = 13,868.36

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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.