Home / 6,821.99-10,223.40-5,429.13

Finding the Fourth Proportional to 6,821.99, 10,223.40 and 5,429.13

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Solution

The fourth proportional to 6,821.99, 10,223.40 and 5,429.13 is: 8,136.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,821.99 : 10,223.40 = 5,429.13 : x
  2. Step 2: Convert to fraction form
    6,821.99/10,223.40 = 5,429.13/x
  3. Step 3: Cross multiply
    6,821.99x = 10,223.40 × 5,429.13
  4. Step 4: Simplify right side
    6,821.99x = 55,504,167.64
  5. Step 5: Solve for x
    x = 55,504,167.64/6,821.99
  6. Step 6: Final answer
    x = 8,136.07

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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.