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Finding the Fourth Proportional to 12,563.36, 18,848.14 and 8,872.82

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Solution

The fourth proportional to 12,563.36, 18,848.14 and 8,872.82 is: 13,311.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,563.36 : 18,848.14 = 8,872.82 : x
  2. Step 2: Convert to fraction form
    12,563.36/18,848.14 = 8,872.82/x
  3. Step 3: Cross multiply
    12,563.36x = 18,848.14 × 8,872.82
  4. Step 4: Simplify right side
    12,563.36x = 167,236,153.55
  5. Step 5: Solve for x
    x = 167,236,153.55/12,563.36
  6. Step 6: Final answer
    x = 13,311.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.