Home / 20,843.99-28,767.49-12,345.44

Finding the Fourth Proportional to 20,843.99, 28,767.49 and 12,345.44

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Solution

The fourth proportional to 20,843.99, 28,767.49 and 12,345.44 is: 17,038.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,843.99 : 28,767.49 = 12,345.44 : x
  2. Step 2: Convert to fraction form
    20,843.99/28,767.49 = 12,345.44/x
  3. Step 3: Cross multiply
    20,843.99x = 28,767.49 × 12,345.44
  4. Step 4: Simplify right side
    20,843.99x = 355,147,362.80
  5. Step 5: Solve for x
    x = 355,147,362.80/20,843.99
  6. Step 6: Final answer
    x = 17,038.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.