Home / 20,403.80-30,609.61-7,076.27

Finding the Fourth Proportional to 20,403.80, 30,609.61 and 7,076.27

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Solution

The fourth proportional to 20,403.80, 30,609.61 and 7,076.27 is: 10,615.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,403.80 : 30,609.61 = 7,076.27 : x
  2. Step 2: Convert to fraction form
    20,403.80/30,609.61 = 7,076.27/x
  3. Step 3: Cross multiply
    20,403.80x = 30,609.61 × 7,076.27
  4. Step 4: Simplify right side
    20,403.80x = 216,601,976.78
  5. Step 5: Solve for x
    x = 216,601,976.78/20,403.80
  6. Step 6: Final answer
    x = 10,615.77

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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.