Home / 20,622.75-30,934.40-5,040.38

Finding the Fourth Proportional to 20,622.75, 30,934.40 and 5,040.38

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Solution

The fourth proportional to 20,622.75, 30,934.40 and 5,040.38 is: 7,560.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,622.75 : 30,934.40 = 5,040.38 : x
  2. Step 2: Convert to fraction form
    20,622.75/30,934.40 = 5,040.38/x
  3. Step 3: Cross multiply
    20,622.75x = 30,934.40 × 5,040.38
  4. Step 4: Simplify right side
    20,622.75x = 155,920,951.20
  5. Step 5: Solve for x
    x = 155,920,951.20/20,622.75
  6. Step 6: Final answer
    x = 7,560.63

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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.