Home / 13,905.73-20,902.34-12,079.59

Finding the Fourth Proportional to 13,905.73, 20,902.34 and 12,079.59

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Solution

The fourth proportional to 13,905.73, 20,902.34 and 12,079.59 is: 18,157.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,905.73 : 20,902.34 = 12,079.59 : x
  2. Step 2: Convert to fraction form
    13,905.73/20,902.34 = 12,079.59/x
  3. Step 3: Cross multiply
    13,905.73x = 20,902.34 × 12,079.59
  4. Step 4: Simplify right side
    13,905.73x = 252,491,697.24
  5. Step 5: Solve for x
    x = 252,491,697.24/13,905.73
  6. Step 6: Final answer
    x = 18,157.39

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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.