Home / 13,515.22-20,295.30-8,353.90

Finding the Fourth Proportional to 13,515.22, 20,295.30 and 8,353.90

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Solution

The fourth proportional to 13,515.22, 20,295.30 and 8,353.90 is: 12,544.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,515.22 : 20,295.30 = 8,353.90 : x
  2. Step 2: Convert to fraction form
    13,515.22/20,295.30 = 8,353.90/x
  3. Step 3: Cross multiply
    13,515.22x = 20,295.30 × 8,353.90
  4. Step 4: Simplify right side
    13,515.22x = 169,544,906.67
  5. Step 5: Solve for x
    x = 169,544,906.67/13,515.22
  6. Step 6: Final answer
    x = 12,544.74

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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.