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Finding the Fourth Proportional to 28,908.76, 43,366.04 and 7,849.12

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Solution

The fourth proportional to 28,908.76, 43,366.04 and 7,849.12 is: 11,774.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,908.76 : 43,366.04 = 7,849.12 : x
  2. Step 2: Convert to fraction form
    28,908.76/43,366.04 = 7,849.12/x
  3. Step 3: Cross multiply
    28,908.76x = 43,366.04 × 7,849.12
  4. Step 4: Simplify right side
    28,908.76x = 340,385,251.88
  5. Step 5: Solve for x
    x = 340,385,251.88/28,908.76
  6. Step 6: Final answer
    x = 11,774.47

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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.