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Finding the Fourth Proportional to 12,916, 19,376.88 and 4,708

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Solution

The fourth proportional to 12,916, 19,376.88 and 4,708 is: 7,063.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,916 : 19,376.88 = 4,708 : x
  2. Step 2: Convert to fraction form
    12,916/19,376.88 = 4,708/x
  3. Step 3: Cross multiply
    12,916x = 19,376.88 × 4,708
  4. Step 4: Simplify right side
    12,916x = 91,226,351.04
  5. Step 5: Solve for x
    x = 91,226,351.04/12,916
  6. Step 6: Final answer
    x = 7,063.05

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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.