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Finding the Fourth Proportional to 20,361.67, 30,535.01 and 7,031.28

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Solution

The fourth proportional to 20,361.67, 30,535.01 and 7,031.28 is: 10,544.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,361.67 : 30,535.01 = 7,031.28 : x
  2. Step 2: Convert to fraction form
    20,361.67/30,535.01 = 7,031.28/x
  3. Step 3: Cross multiply
    20,361.67x = 30,535.01 × 7,031.28
  4. Step 4: Simplify right side
    20,361.67x = 214,700,205.11
  5. Step 5: Solve for x
    x = 214,700,205.11/20,361.67
  6. Step 6: Final answer
    x = 10,544.33

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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.