Home / 20,622.81-30,934.18-5,040.43

Finding the Fourth Proportional to 20,622.81, 30,934.18 and 5,040.43

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Solution

The fourth proportional to 20,622.81, 30,934.18 and 5,040.43 is: 7,560.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,622.81 : 30,934.18 = 5,040.43 : x
  2. Step 2: Convert to fraction form
    20,622.81/30,934.18 = 5,040.43/x
  3. Step 3: Cross multiply
    20,622.81x = 30,934.18 × 5,040.43
  4. Step 4: Simplify right side
    20,622.81x = 155,921,568.90
  5. Step 5: Solve for x
    x = 155,921,568.90/20,622.81
  6. Step 6: Final answer
    x = 7,560.64

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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.