Home / 20,172.42-30,265.65-7,028.28

Finding the Fourth Proportional to 20,172.42, 30,265.65 and 7,028.28

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Solution

The fourth proportional to 20,172.42, 30,265.65 and 7,028.28 is: 10,544.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,172.42 : 30,265.65 = 7,028.28 : x
  2. Step 2: Convert to fraction form
    20,172.42/30,265.65 = 7,028.28/x
  3. Step 3: Cross multiply
    20,172.42x = 30,265.65 × 7,028.28
  4. Step 4: Simplify right side
    20,172.42x = 212,715,462.58
  5. Step 5: Solve for x
    x = 212,715,462.58/20,172.42
  6. Step 6: Final answer
    x = 10,544.87

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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.