Home / 20,075.18-30,100.61-8,979.80

Finding the Fourth Proportional to 20,075.18, 30,100.61 and 8,979.80

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Solution

The fourth proportional to 20,075.18, 30,100.61 and 8,979.80 is: 13,464.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,075.18 : 30,100.61 = 8,979.80 : x
  2. Step 2: Convert to fraction form
    20,075.18/30,100.61 = 8,979.80/x
  3. Step 3: Cross multiply
    20,075.18x = 30,100.61 × 8,979.80
  4. Step 4: Simplify right side
    20,075.18x = 270,297,329.62
  5. Step 5: Solve for x
    x = 270,297,329.62/20,075.18
  6. Step 6: Final answer
    x = 13,464.26

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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.