Home / 12,747.84-19,121.76-3,983.45

Finding the Fourth Proportional to 12,747.84, 19,121.76 and 3,983.45

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Solution

The fourth proportional to 12,747.84, 19,121.76 and 3,983.45 is: 5,975.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,747.84 : 19,121.76 = 3,983.45 : x
  2. Step 2: Convert to fraction form
    12,747.84/19,121.76 = 3,983.45/x
  3. Step 3: Cross multiply
    12,747.84x = 19,121.76 × 3,983.45
  4. Step 4: Simplify right side
    12,747.84x = 76,170,574.87
  5. Step 5: Solve for x
    x = 76,170,574.87/12,747.84
  6. Step 6: Final answer
    x = 5,975.18

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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.