Home / 13,823.84-20,731.51-3,960.47

Finding the Fourth Proportional to 13,823.84, 20,731.51 and 3,960.47

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Solution

The fourth proportional to 13,823.84, 20,731.51 and 3,960.47 is: 5,939.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,823.84 : 20,731.51 = 3,960.47 : x
  2. Step 2: Convert to fraction form
    13,823.84/20,731.51 = 3,960.47/x
  3. Step 3: Cross multiply
    13,823.84x = 20,731.51 × 3,960.47
  4. Step 4: Simplify right side
    13,823.84x = 82,106,523.41
  5. Step 5: Solve for x
    x = 82,106,523.41/13,823.84
  6. Step 6: Final answer
    x = 5,939.49

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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.