Home / 12,635.12-18,937.30-8,938.41

Finding the Fourth Proportional to 12,635.12, 18,937.30 and 8,938.41

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Solution

The fourth proportional to 12,635.12, 18,937.30 and 8,938.41 is: 13,396.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,635.12 : 18,937.30 = 8,938.41 : x
  2. Step 2: Convert to fraction form
    12,635.12/18,937.30 = 8,938.41/x
  3. Step 3: Cross multiply
    12,635.12x = 18,937.30 × 8,938.41
  4. Step 4: Simplify right side
    12,635.12x = 169,269,351.69
  5. Step 5: Solve for x
    x = 169,269,351.69/12,635.12
  6. Step 6: Final answer
    x = 13,396.74

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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.