Home / 20,628.63-28,466.26-12,132.26

Finding the Fourth Proportional to 20,628.63, 28,466.26 and 12,132.26

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Solution

The fourth proportional to 20,628.63, 28,466.26 and 12,132.26 is: 16,741.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,628.63 : 28,466.26 = 12,132.26 : x
  2. Step 2: Convert to fraction form
    20,628.63/28,466.26 = 12,132.26/x
  3. Step 3: Cross multiply
    20,628.63x = 28,466.26 × 12,132.26
  4. Step 4: Simplify right side
    20,628.63x = 345,360,067.55
  5. Step 5: Solve for x
    x = 345,360,067.55/20,628.63
  6. Step 6: Final answer
    x = 16,741.78

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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.