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Finding the Fourth Proportional to 28,873.69, 43,315.94 and 9,146.95

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Solution

The fourth proportional to 28,873.69, 43,315.94 and 9,146.95 is: 13,722.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,873.69 : 43,315.94 = 9,146.95 : x
  2. Step 2: Convert to fraction form
    28,873.69/43,315.94 = 9,146.95/x
  3. Step 3: Cross multiply
    28,873.69x = 43,315.94 × 9,146.95
  4. Step 4: Simplify right side
    28,873.69x = 396,208,691.65
  5. Step 5: Solve for x
    x = 396,208,691.65/28,873.69
  6. Step 6: Final answer
    x = 13,722.14

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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.