Home / 20,740.33-28,623.71-12,245.26

Finding the Fourth Proportional to 20,740.33, 28,623.71 and 12,245.26

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Solution

The fourth proportional to 20,740.33, 28,623.71 and 12,245.26 is: 16,899.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,740.33 : 28,623.71 = 12,245.26 : x
  2. Step 2: Convert to fraction form
    20,740.33/28,623.71 = 12,245.26/x
  3. Step 3: Cross multiply
    20,740.33x = 28,623.71 × 12,245.26
  4. Step 4: Simplify right side
    20,740.33x = 350,504,628.00
  5. Step 5: Solve for x
    x = 350,504,628.00/20,740.33
  6. Step 6: Final answer
    x = 16,899.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.