Home / 12,984.99-17,921.60-12,393.35

Finding the Fourth Proportional to 12,984.99, 17,921.60 and 12,393.35

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Solution

The fourth proportional to 12,984.99, 17,921.60 and 12,393.35 is: 17,105.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,984.99 : 17,921.60 = 12,393.35 : x
  2. Step 2: Convert to fraction form
    12,984.99/17,921.60 = 12,393.35/x
  3. Step 3: Cross multiply
    12,984.99x = 17,921.60 × 12,393.35
  4. Step 4: Simplify right side
    12,984.99x = 222,108,661.36
  5. Step 5: Solve for x
    x = 222,108,661.36/12,984.99
  6. Step 6: Final answer
    x = 17,105.03

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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.