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Finding the Fourth Proportional to 19,871.88, 29,800.18 and 8,466.60

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Solution

The fourth proportional to 19,871.88, 29,800.18 and 8,466.60 is: 12,696.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,871.88 : 29,800.18 = 8,466.60 : x
  2. Step 2: Convert to fraction form
    19,871.88/29,800.18 = 8,466.60/x
  3. Step 3: Cross multiply
    19,871.88x = 29,800.18 × 8,466.60
  4. Step 4: Simplify right side
    19,871.88x = 252,306,203.99
  5. Step 5: Solve for x
    x = 252,306,203.99/19,871.88
  6. Step 6: Final answer
    x = 12,696.64

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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.