Home / 13,740.84-20,608.93-3,878.38

Finding the Fourth Proportional to 13,740.84, 20,608.93 and 3,878.38

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Solution

The fourth proportional to 13,740.84, 20,608.93 and 3,878.38 is: 5,816.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,740.84 : 20,608.93 = 3,878.38 : x
  2. Step 2: Convert to fraction form
    13,740.84/20,608.93 = 3,878.38/x
  3. Step 3: Cross multiply
    13,740.84x = 20,608.93 × 3,878.38
  4. Step 4: Simplify right side
    13,740.84x = 79,929,292.54
  5. Step 5: Solve for x
    x = 79,929,292.54/13,740.84
  6. Step 6: Final answer
    x = 5,816.91

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1.5x scale

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.