Home / 13,803.36-20,698.80-3,940.29

Finding the Fourth Proportional to 13,803.36, 20,698.80 and 3,940.29

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Solution

The fourth proportional to 13,803.36, 20,698.80 and 3,940.29 is: 5,908.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,803.36 : 20,698.80 = 3,940.29 : x
  2. Step 2: Convert to fraction form
    13,803.36/20,698.80 = 3,940.29/x
  3. Step 3: Cross multiply
    13,803.36x = 20,698.80 × 3,940.29
  4. Step 4: Simplify right side
    13,803.36x = 81,559,274.65
  5. Step 5: Solve for x
    x = 81,559,274.65/13,803.36
  6. Step 6: Final answer
    x = 5,908.65

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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.