Home / 28,998.06-40,015.80-16,422

Finding the Fourth Proportional to 28,998.06, 40,015.80 and 16,422

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Solution

The fourth proportional to 28,998.06, 40,015.80 and 16,422 is: 22,661.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,998.06 : 40,015.80 = 16,422 : x
  2. Step 2: Convert to fraction form
    28,998.06/40,015.80 = 16,422/x
  3. Step 3: Cross multiply
    28,998.06x = 40,015.80 × 16,422
  4. Step 4: Simplify right side
    28,998.06x = 657,139,467.60
  5. Step 5: Solve for x
    x = 657,139,467.60/28,998.06
  6. Step 6: Final answer
    x = 22,661.50

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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.