Home / 19,405.80-29,119.99-8,160.33

Finding the Fourth Proportional to 19,405.80, 29,119.99 and 8,160.33

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Solution

The fourth proportional to 19,405.80, 29,119.99 and 8,160.33 is: 12,245.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,405.80 : 29,119.99 = 8,160.33 : x
  2. Step 2: Convert to fraction form
    19,405.80/29,119.99 = 8,160.33/x
  3. Step 3: Cross multiply
    19,405.80x = 29,119.99 × 8,160.33
  4. Step 4: Simplify right side
    19,405.80x = 237,628,728.00
  5. Step 5: Solve for x
    x = 237,628,728.00/19,405.80
  6. Step 6: Final answer
    x = 12,245.24

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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.