Home / 13,612.31-20,410.05-12,452.09

Finding the Fourth Proportional to 13,612.31, 20,410.05 and 12,452.09

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Solution

The fourth proportional to 13,612.31, 20,410.05 and 12,452.09 is: 18,670.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,612.31 : 20,410.05 = 12,452.09 : x
  2. Step 2: Convert to fraction form
    13,612.31/20,410.05 = 12,452.09/x
  3. Step 3: Cross multiply
    13,612.31x = 20,410.05 × 12,452.09
  4. Step 4: Simplify right side
    13,612.31x = 254,147,677.45
  5. Step 5: Solve for x
    x = 254,147,677.45/13,612.31
  6. Step 6: Final answer
    x = 18,670.44

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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.