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Finding the Fourth Proportional to 28,865.67, 43,298.04 and 9,143.94

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Solution

The fourth proportional to 28,865.67, 43,298.04 and 9,143.94 is: 13,715.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,865.67 : 43,298.04 = 9,143.94 : x
  2. Step 2: Convert to fraction form
    28,865.67/43,298.04 = 9,143.94/x
  3. Step 3: Cross multiply
    28,865.67x = 43,298.04 × 9,143.94
  4. Step 4: Simplify right side
    28,865.67x = 395,914,632.98
  5. Step 5: Solve for x
    x = 395,914,632.98/28,865.67
  6. Step 6: Final answer
    x = 13,715.76

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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.