Home / 21,998.45-30,357.05-13,040.60

Finding the Fourth Proportional to 21,998.45, 30,357.05 and 13,040.60

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Solution

The fourth proportional to 21,998.45, 30,357.05 and 13,040.60 is: 17,995.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,998.45 : 30,357.05 = 13,040.60 : x
  2. Step 2: Convert to fraction form
    21,998.45/30,357.05 = 13,040.60/x
  3. Step 3: Cross multiply
    21,998.45x = 30,357.05 × 13,040.60
  4. Step 4: Simplify right side
    21,998.45x = 395,873,929.24
  5. Step 5: Solve for x
    x = 395,873,929.24/21,998.45
  6. Step 6: Final answer
    x = 17,995.54

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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.