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Finding the Fourth Proportional to 15,900, 23,850 and 6,666

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Solution

The fourth proportional to 15,900, 23,850 and 6,666 is: 9,999

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,900 : 23,850 = 6,666 : x
  2. Step 2: Convert to fraction form
    15,900/23,850 = 6,666/x
  3. Step 3: Cross multiply
    15,900x = 23,850 × 6,666
  4. Step 4: Simplify right side
    15,900x = 158,984,100
  5. Step 5: Solve for x
    x = 158,984,100/15,900
  6. Step 6: Final answer
    x = 9,999

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.