Home / 16,782.80-25,185.60-6,921.99

Finding the Fourth Proportional to 16,782.80, 25,185.60 and 6,921.99

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Solution

The fourth proportional to 16,782.80, 25,185.60 and 6,921.99 is: 10,387.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,782.80 : 25,185.60 = 6,921.99 : x
  2. Step 2: Convert to fraction form
    16,782.80/25,185.60 = 6,921.99/x
  3. Step 3: Cross multiply
    16,782.80x = 25,185.60 × 6,921.99
  4. Step 4: Simplify right side
    16,782.80x = 174,334,471.34
  5. Step 5: Solve for x
    x = 174,334,471.34/16,782.80
  6. Step 6: Final answer
    x = 10,387.69

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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.