Home / 28,998.05-40,016.16-16,422.80

Finding the Fourth Proportional to 28,998.05, 40,016.16 and 16,422.80

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Solution

The fourth proportional to 28,998.05, 40,016.16 and 16,422.80 is: 22,662.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,998.05 : 40,016.16 = 16,422.80 : x
  2. Step 2: Convert to fraction form
    28,998.05/40,016.16 = 16,422.80/x
  3. Step 3: Cross multiply
    28,998.05x = 40,016.16 × 16,422.80
  4. Step 4: Simplify right side
    28,998.05x = 657,177,192.37
  5. Step 5: Solve for x
    x = 657,177,192.37/28,998.05
  6. Step 6: Final answer
    x = 22,662.81

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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.