Home / 20,185.68-30,279.88-6,860.01

Finding the Fourth Proportional to 20,185.68, 30,279.88 and 6,860.01

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Solution

The fourth proportional to 20,185.68, 30,279.88 and 6,860.01 is: 10,290.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,185.68 : 30,279.88 = 6,860.01 : x
  2. Step 2: Convert to fraction form
    20,185.68/30,279.88 = 6,860.01/x
  3. Step 3: Cross multiply
    20,185.68x = 30,279.88 × 6,860.01
  4. Step 4: Simplify right side
    20,185.68x = 207,720,279.60
  5. Step 5: Solve for x
    x = 207,720,279.60/20,185.68
  6. Step 6: Final answer
    x = 10,290.48

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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.