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Finding the Fourth Proportional to 28,887, 43,330.50 and 6,999

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Solution

The fourth proportional to 28,887, 43,330.50 and 6,999 is: 10,498.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,887 : 43,330.50 = 6,999 : x
  2. Step 2: Convert to fraction form
    28,887/43,330.50 = 6,999/x
  3. Step 3: Cross multiply
    28,887x = 43,330.50 × 6,999
  4. Step 4: Simplify right side
    28,887x = 303,270,169.50
  5. Step 5: Solve for x
    x = 303,270,169.50/28,887
  6. Step 6: Final answer
    x = 10,498.50

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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.