Home / 20,419.14-30,628.70-7,271.62

Finding the Fourth Proportional to 20,419.14, 30,628.70 and 7,271.62

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Solution

The fourth proportional to 20,419.14, 30,628.70 and 7,271.62 is: 10,907.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,419.14 : 30,628.70 = 7,271.62 : x
  2. Step 2: Convert to fraction form
    20,419.14/30,628.70 = 7,271.62/x
  3. Step 3: Cross multiply
    20,419.14x = 30,628.70 × 7,271.62
  4. Step 4: Simplify right side
    20,419.14x = 222,720,267.49
  5. Step 5: Solve for x
    x = 222,720,267.49/20,419.14
  6. Step 6: Final answer
    x = 10,907.43

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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.