Home / 13,453.64-20,177.75-12,786.77

Finding the Fourth Proportional to 13,453.64, 20,177.75 and 12,786.77

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Solution

The fourth proportional to 13,453.64, 20,177.75 and 12,786.77 is: 19,177.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,453.64 : 20,177.75 = 12,786.77 : x
  2. Step 2: Convert to fraction form
    13,453.64/20,177.75 = 12,786.77/x
  3. Step 3: Cross multiply
    13,453.64x = 20,177.75 × 12,786.77
  4. Step 4: Simplify right side
    13,453.64x = 258,008,350.16
  5. Step 5: Solve for x
    x = 258,008,350.16/13,453.64
  6. Step 6: Final answer
    x = 19,177.59

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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.