Home / 13,614.82-18,787.75-9,137.95

Finding the Fourth Proportional to 13,614.82, 18,787.75 and 9,137.95

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Solution

The fourth proportional to 13,614.82, 18,787.75 and 9,137.95 is: 12,609.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,614.82 : 18,787.75 = 9,137.95 : x
  2. Step 2: Convert to fraction form
    13,614.82/18,787.75 = 9,137.95/x
  3. Step 3: Cross multiply
    13,614.82x = 18,787.75 × 9,137.95
  4. Step 4: Simplify right side
    13,614.82x = 171,681,450.30
  5. Step 5: Solve for x
    x = 171,681,450.30/13,614.82
  6. Step 6: Final answer
    x = 12,609.90

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1.5x scale

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.