Home / 13,635.36-20,453.05-11,780.86

Finding the Fourth Proportional to 13,635.36, 20,453.05 and 11,780.86

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Solution

The fourth proportional to 13,635.36, 20,453.05 and 11,780.86 is: 17,671.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,635.36 : 20,453.05 = 11,780.86 : x
  2. Step 2: Convert to fraction form
    13,635.36/20,453.05 = 11,780.86/x
  3. Step 3: Cross multiply
    13,635.36x = 20,453.05 × 11,780.86
  4. Step 4: Simplify right side
    13,635.36x = 240,954,558.92
  5. Step 5: Solve for x
    x = 240,954,558.92/13,635.36
  6. Step 6: Final answer
    x = 17,671.31

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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.