Home / 28,976.82-39,986.10-16,227.78

Finding the Fourth Proportional to 28,976.82, 39,986.10 and 16,227.78

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Solution

The fourth proportional to 28,976.82, 39,986.10 and 16,227.78 is: 22,393.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,976.82 : 39,986.10 = 16,227.78 : x
  2. Step 2: Convert to fraction form
    28,976.82/39,986.10 = 16,227.78/x
  3. Step 3: Cross multiply
    28,976.82x = 39,986.10 × 16,227.78
  4. Step 4: Simplify right side
    28,976.82x = 648,885,633.86
  5. Step 5: Solve for x
    x = 648,885,633.86/28,976.82
  6. Step 6: Final answer
    x = 22,393.27

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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.