Home / 20,633.63-28,480.89-13,181.63

Finding the Fourth Proportional to 20,633.63, 28,480.89 and 13,181.63

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Solution

The fourth proportional to 20,633.63, 28,480.89 and 13,181.63 is: 18,194.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,633.63 : 28,480.89 = 13,181.63 : x
  2. Step 2: Convert to fraction form
    20,633.63/28,480.89 = 13,181.63/x
  3. Step 3: Cross multiply
    20,633.63x = 28,480.89 × 13,181.63
  4. Step 4: Simplify right side
    20,633.63x = 375,424,554.05
  5. Step 5: Solve for x
    x = 375,424,554.05/20,633.63
  6. Step 6: Final answer
    x = 18,194.79

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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.