Home / 13,518.35-20,266.02-8,257.05

Finding the Fourth Proportional to 13,518.35, 20,266.02 and 8,257.05

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Solution

The fourth proportional to 13,518.35, 20,266.02 and 8,257.05 is: 12,378.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,518.35 : 20,266.02 = 8,257.05 : x
  2. Step 2: Convert to fraction form
    13,518.35/20,266.02 = 8,257.05/x
  3. Step 3: Cross multiply
    13,518.35x = 20,266.02 × 8,257.05
  4. Step 4: Simplify right side
    13,518.35x = 167,337,540.44
  5. Step 5: Solve for x
    x = 167,337,540.44/13,518.35
  6. Step 6: Final answer
    x = 12,378.55

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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.