Home / 21,026.82-28,986.84-16,542.81

Finding the Fourth Proportional to 21,026.82, 28,986.84 and 16,542.81

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Solution

The fourth proportional to 21,026.82, 28,986.84 and 16,542.81 is: 22,805.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,026.82 : 28,986.84 = 16,542.81 : x
  2. Step 2: Convert to fraction form
    21,026.82/28,986.84 = 16,542.81/x
  3. Step 3: Cross multiply
    21,026.82x = 28,986.84 × 16,542.81
  4. Step 4: Simplify right side
    21,026.82x = 479,523,786.62
  5. Step 5: Solve for x
    x = 479,523,786.62/21,026.82
  6. Step 6: Final answer
    x = 22,805.34

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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.