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Finding the Fourth Proportional to 12,624.72, 18,937.08 and 7,998

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Solution

The fourth proportional to 12,624.72, 18,937.08 and 7,998 is: 11,997

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,624.72 : 18,937.08 = 7,998 : x
  2. Step 2: Convert to fraction form
    12,624.72/18,937.08 = 7,998/x
  3. Step 3: Cross multiply
    12,624.72x = 18,937.08 × 7,998
  4. Step 4: Simplify right side
    12,624.72x = 151,458,765.84
  5. Step 5: Solve for x
    x = 151,458,765.84/12,624.72
  6. Step 6: Final answer
    x = 11,997

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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.