Home / 20,722.20-31,097.70-9,043.80

Finding the Fourth Proportional to 20,722.20, 31,097.70 and 9,043.80

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Solution

The fourth proportional to 20,722.20, 31,097.70 and 9,043.80 is: 13,571.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,722.20 : 31,097.70 = 9,043.80 : x
  2. Step 2: Convert to fraction form
    20,722.20/31,097.70 = 9,043.80/x
  3. Step 3: Cross multiply
    20,722.20x = 31,097.70 × 9,043.80
  4. Step 4: Simplify right side
    20,722.20x = 281,241,379.26
  5. Step 5: Solve for x
    x = 281,241,379.26/20,722.20
  6. Step 6: Final answer
    x = 13,571.98

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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.