Home / 18,729.26-28,075.46-7,643.74

Finding the Fourth Proportional to 18,729.26, 28,075.46 and 7,643.74

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Solution

The fourth proportional to 18,729.26, 28,075.46 and 7,643.74 is: 11,458.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,729.26 : 28,075.46 = 7,643.74 : x
  2. Step 2: Convert to fraction form
    18,729.26/28,075.46 = 7,643.74/x
  3. Step 3: Cross multiply
    18,729.26x = 28,075.46 × 7,643.74
  4. Step 4: Simplify right side
    18,729.26x = 214,601,516.62
  5. Step 5: Solve for x
    x = 214,601,516.62/18,729.26
  6. Step 6: Final answer
    x = 11,458.09

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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.