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Finding the Fourth Proportional to 15,748.46, 21,732.08 and 8,674.74

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Solution

The fourth proportional to 15,748.46, 21,732.08 and 8,674.74 is: 11,970.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,748.46 : 21,732.08 = 8,674.74 : x
  2. Step 2: Convert to fraction form
    15,748.46/21,732.08 = 8,674.74/x
  3. Step 3: Cross multiply
    15,748.46x = 21,732.08 × 8,674.74
  4. Step 4: Simplify right side
    15,748.46x = 188,520,143.66
  5. Step 5: Solve for x
    x = 188,520,143.66/15,748.46
  6. Step 6: Final answer
    x = 11,970.70

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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.