Home / 13,639.94-18,825.70-8,537.82

Finding the Fourth Proportional to 13,639.94, 18,825.70 and 8,537.82

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Solution

The fourth proportional to 13,639.94, 18,825.70 and 8,537.82 is: 11,783.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,639.94 : 18,825.70 = 8,537.82 : x
  2. Step 2: Convert to fraction form
    13,639.94/18,825.70 = 8,537.82/x
  3. Step 3: Cross multiply
    13,639.94x = 18,825.70 × 8,537.82
  4. Step 4: Simplify right side
    13,639.94x = 160,730,416.63
  5. Step 5: Solve for x
    x = 160,730,416.63/13,639.94
  6. Step 6: Final answer
    x = 11,783.81

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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.