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Finding the Fourth Proportional to 12,493.08, 17,242.20 and 7,187.76

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Solution

The fourth proportional to 12,493.08, 17,242.20 and 7,187.76 is: 9,920.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,493.08 : 17,242.20 = 7,187.76 : x
  2. Step 2: Convert to fraction form
    12,493.08/17,242.20 = 7,187.76/x
  3. Step 3: Cross multiply
    12,493.08x = 17,242.20 × 7,187.76
  4. Step 4: Simplify right side
    12,493.08x = 123,932,795.47
  5. Step 5: Solve for x
    x = 123,932,795.47/12,493.08
  6. Step 6: Final answer
    x = 9,920.12

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.