Home / 13,255.25-18,308.50-9,912.95

Finding the Fourth Proportional to 13,255.25, 18,308.50 and 9,912.95

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Solution

The fourth proportional to 13,255.25, 18,308.50 and 9,912.95 is: 13,692.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,255.25 : 18,308.50 = 9,912.95 : x
  2. Step 2: Convert to fraction form
    13,255.25/18,308.50 = 9,912.95/x
  3. Step 3: Cross multiply
    13,255.25x = 18,308.50 × 9,912.95
  4. Step 4: Simplify right side
    13,255.25x = 181,491,197.41
  5. Step 5: Solve for x
    x = 181,491,197.41/13,255.25
  6. Step 6: Final answer
    x = 13,692.03

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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.