Home / 13,539.33-20,285.76-12,169.77

Finding the Fourth Proportional to 13,539.33, 20,285.76 and 12,169.77

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Solution

The fourth proportional to 13,539.33, 20,285.76 and 12,169.77 is: 18,233.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,539.33 : 20,285.76 = 12,169.77 : x
  2. Step 2: Convert to fraction form
    13,539.33/20,285.76 = 12,169.77/x
  3. Step 3: Cross multiply
    13,539.33x = 20,285.76 × 12,169.77
  4. Step 4: Simplify right side
    13,539.33x = 246,873,033.48
  5. Step 5: Solve for x
    x = 246,873,033.48/13,539.33
  6. Step 6: Final answer
    x = 18,233.77

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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.