Home / 13,445.82-20,169.81-4,086.66

Finding the Fourth Proportional to 13,445.82, 20,169.81 and 4,086.66

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Solution

The fourth proportional to 13,445.82, 20,169.81 and 4,086.66 is: 6,130.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,445.82 : 20,169.81 = 4,086.66 : x
  2. Step 2: Convert to fraction form
    13,445.82/20,169.81 = 4,086.66/x
  3. Step 3: Cross multiply
    13,445.82x = 20,169.81 × 4,086.66
  4. Step 4: Simplify right side
    13,445.82x = 82,427,155.73
  5. Step 5: Solve for x
    x = 82,427,155.73/13,445.82
  6. Step 6: Final answer
    x = 6,130.32

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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.