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Finding the Fourth Proportional to 18,372, 25,355.49 and 10,307.88

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Solution

The fourth proportional to 18,372, 25,355.49 and 10,307.88 is: 14,226.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,372 : 25,355.49 = 10,307.88 : x
  2. Step 2: Convert to fraction form
    18,372/25,355.49 = 10,307.88/x
  3. Step 3: Cross multiply
    18,372x = 25,355.49 × 10,307.88
  4. Step 4: Simplify right side
    18,372x = 261,361,348.26
  5. Step 5: Solve for x
    x = 261,361,348.26/18,372
  6. Step 6: Final answer
    x = 14,226.07

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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.