Home / 20,623.86-30,910.50-11,815.92

Finding the Fourth Proportional to 20,623.86, 30,910.50 and 11,815.92

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Solution

The fourth proportional to 20,623.86, 30,910.50 and 11,815.92 is: 17,709.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,623.86 : 30,910.50 = 11,815.92 : x
  2. Step 2: Convert to fraction form
    20,623.86/30,910.50 = 11,815.92/x
  3. Step 3: Cross multiply
    20,623.86x = 30,910.50 × 11,815.92
  4. Step 4: Simplify right side
    20,623.86x = 365,235,995.16
  5. Step 5: Solve for x
    x = 365,235,995.16/20,623.86
  6. Step 6: Final answer
    x = 17,709.39

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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.