Home / 20,969.55-28,928.44-12,466.85

Finding the Fourth Proportional to 20,969.55, 28,928.44 and 12,466.85

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Solution

The fourth proportional to 20,969.55, 28,928.44 and 12,466.85 is: 17,198.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,969.55 : 28,928.44 = 12,466.85 : x
  2. Step 2: Convert to fraction form
    20,969.55/28,928.44 = 12,466.85/x
  3. Step 3: Cross multiply
    20,969.55x = 28,928.44 × 12,466.85
  4. Step 4: Simplify right side
    20,969.55x = 360,646,393.16
  5. Step 5: Solve for x
    x = 360,646,393.16/20,969.55
  6. Step 6: Final answer
    x = 17,198.58

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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.