Home / 20,170.60-30,239.70-7,022.68

Finding the Fourth Proportional to 20,170.60, 30,239.70 and 7,022.68

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Solution

The fourth proportional to 20,170.60, 30,239.70 and 7,022.68 is: 10,528.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,170.60 : 30,239.70 = 7,022.68 : x
  2. Step 2: Convert to fraction form
    20,170.60/30,239.70 = 7,022.68/x
  3. Step 3: Cross multiply
    20,170.60x = 30,239.70 × 7,022.68
  4. Step 4: Simplify right side
    20,170.60x = 212,363,736.40
  5. Step 5: Solve for x
    x = 212,363,736.40/20,170.60
  6. Step 6: Final answer
    x = 10,528.38

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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.