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Finding the Fourth Proportional to 13,732.60, 18,953.01 and 8,697.29

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Solution

The fourth proportional to 13,732.60, 18,953.01 and 8,697.29 is: 12,003.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,732.60 : 18,953.01 = 8,697.29 : x
  2. Step 2: Convert to fraction form
    13,732.60/18,953.01 = 8,697.29/x
  3. Step 3: Cross multiply
    13,732.60x = 18,953.01 × 8,697.29
  4. Step 4: Simplify right side
    13,732.60x = 164,839,696.96
  5. Step 5: Solve for x
    x = 164,839,696.96/13,732.60
  6. Step 6: Final answer
    x = 12,003.53

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Why These Related Problems?

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