Home / 22,020.40-33,030.60-20,999.80

Finding the Fourth Proportional to 22,020.40, 33,030.60 and 20,999.80

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Solution

The fourth proportional to 22,020.40, 33,030.60 and 20,999.80 is: 31,499.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,020.40 : 33,030.60 = 20,999.80 : x
  2. Step 2: Convert to fraction form
    22,020.40/33,030.60 = 20,999.80/x
  3. Step 3: Cross multiply
    22,020.40x = 33,030.60 × 20,999.80
  4. Step 4: Simplify right side
    22,020.40x = 693,635,993.88
  5. Step 5: Solve for x
    x = 693,635,993.88/22,020.40
  6. Step 6: Final answer
    x = 31,499.70

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Similar ratio
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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.