Home / 18,722.26-28,075.60-7,621.42

Finding the Fourth Proportional to 18,722.26, 28,075.60 and 7,621.42

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Solution

The fourth proportional to 18,722.26, 28,075.60 and 7,621.42 is: 11,428.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,722.26 : 28,075.60 = 7,621.42 : x
  2. Step 2: Convert to fraction form
    18,722.26/28,075.60 = 7,621.42/x
  3. Step 3: Cross multiply
    18,722.26x = 28,075.60 × 7,621.42
  4. Step 4: Simplify right side
    18,722.26x = 213,975,939.35
  5. Step 5: Solve for x
    x = 213,975,939.35/18,722.26
  6. Step 6: Final answer
    x = 11,428.96

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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.