Home / 20,504.60-30,707.40-11,712.80

Finding the Fourth Proportional to 20,504.60, 30,707.40 and 11,712.80

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Solution

The fourth proportional to 20,504.60, 30,707.40 and 11,712.80 is: 17,540.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,504.60 : 30,707.40 = 11,712.80 : x
  2. Step 2: Convert to fraction form
    20,504.60/30,707.40 = 11,712.80/x
  3. Step 3: Cross multiply
    20,504.60x = 30,707.40 × 11,712.80
  4. Step 4: Simplify right side
    20,504.60x = 359,669,634.72
  5. Step 5: Solve for x
    x = 359,669,634.72/20,504.60
  6. Step 6: Final answer
    x = 17,540.92

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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.