Home / 20,455.09-30,707.22-13,861.27

Finding the Fourth Proportional to 20,455.09, 30,707.22 and 13,861.27

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Solution

The fourth proportional to 20,455.09, 30,707.22 and 13,861.27 is: 20,808.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,455.09 : 30,707.22 = 13,861.27 : x
  2. Step 2: Convert to fraction form
    20,455.09/30,707.22 = 13,861.27/x
  3. Step 3: Cross multiply
    20,455.09x = 30,707.22 × 13,861.27
  4. Step 4: Simplify right side
    20,455.09x = 425,641,067.37
  5. Step 5: Solve for x
    x = 425,641,067.37/20,455.09
  6. Step 6: Final answer
    x = 20,808.56

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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.