Home / 13,240.47-19,863.44-3,880.79

Finding the Fourth Proportional to 13,240.47, 19,863.44 and 3,880.79

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Solution

The fourth proportional to 13,240.47, 19,863.44 and 3,880.79 is: 5,821.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,240.47 : 19,863.44 = 3,880.79 : x
  2. Step 2: Convert to fraction form
    13,240.47/19,863.44 = 3,880.79/x
  3. Step 3: Cross multiply
    13,240.47x = 19,863.44 × 3,880.79
  4. Step 4: Simplify right side
    13,240.47x = 77,085,839.32
  5. Step 5: Solve for x
    x = 77,085,839.32/13,240.47
  6. Step 6: Final answer
    x = 5,821.99

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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.