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Finding the Fourth Proportional to 28,608.65, 42,914.00 and 8,886.69

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Solution

The fourth proportional to 28,608.65, 42,914.00 and 8,886.69 is: 13,330.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,608.65 : 42,914.00 = 8,886.69 : x
  2. Step 2: Convert to fraction form
    28,608.65/42,914.00 = 8,886.69/x
  3. Step 3: Cross multiply
    28,608.65x = 42,914.00 × 8,886.69
  4. Step 4: Simplify right side
    28,608.65x = 381,363,370.23
  5. Step 5: Solve for x
    x = 381,363,370.23/28,608.65
  6. Step 6: Final answer
    x = 13,330.35

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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.