Home / 13,520.58-20,257.65-12,151.01

Finding the Fourth Proportional to 13,520.58, 20,257.65 and 12,151.01

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Solution

The fourth proportional to 13,520.58, 20,257.65 and 12,151.01 is: 18,205.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,520.58 : 20,257.65 = 12,151.01 : x
  2. Step 2: Convert to fraction form
    13,520.58/20,257.65 = 12,151.01/x
  3. Step 3: Cross multiply
    13,520.58x = 20,257.65 × 12,151.01
  4. Step 4: Simplify right side
    13,520.58x = 246,150,806.44
  5. Step 5: Solve for x
    x = 246,150,806.44/13,520.58
  6. Step 6: Final answer
    x = 18,205.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.