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Finding the Fourth Proportional to 28,746.12, 43,119.18 and 7,969.08

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Solution

The fourth proportional to 28,746.12, 43,119.18 and 7,969.08 is: 11,953.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,746.12 : 43,119.18 = 7,969.08 : x
  2. Step 2: Convert to fraction form
    28,746.12/43,119.18 = 7,969.08/x
  3. Step 3: Cross multiply
    28,746.12x = 43,119.18 × 7,969.08
  4. Step 4: Simplify right side
    28,746.12x = 343,620,194.95
  5. Step 5: Solve for x
    x = 343,620,194.95/28,746.12
  6. Step 6: Final answer
    x = 11,953.62

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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.