Home / 20,186.88-30,284.28-7,039.68

Finding the Fourth Proportional to 20,186.88, 30,284.28 and 7,039.68

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Solution

The fourth proportional to 20,186.88, 30,284.28 and 7,039.68 is: 10,560.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,186.88 : 30,284.28 = 7,039.68 : x
  2. Step 2: Convert to fraction form
    20,186.88/30,284.28 = 7,039.68/x
  3. Step 3: Cross multiply
    20,186.88x = 30,284.28 × 7,039.68
  4. Step 4: Simplify right side
    20,186.88x = 213,191,640.23
  5. Step 5: Solve for x
    x = 213,191,640.23/20,186.88
  6. Step 6: Final answer
    x = 10,560.90

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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.