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Finding the Fourth Proportional to 15,674.34, 21,630.60 and 8,601.15

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Solution

The fourth proportional to 15,674.34, 21,630.60 and 8,601.15 is: 11,869.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,674.34 : 21,630.60 = 8,601.15 : x
  2. Step 2: Convert to fraction form
    15,674.34/21,630.60 = 8,601.15/x
  3. Step 3: Cross multiply
    15,674.34x = 21,630.60 × 8,601.15
  4. Step 4: Simplify right side
    15,674.34x = 186,048,035.19
  5. Step 5: Solve for x
    x = 186,048,035.19/15,674.34
  6. Step 6: Final answer
    x = 11,869.59

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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.