Home / 20,257.55-30,367.85-7,102.74

Finding the Fourth Proportional to 20,257.55, 30,367.85 and 7,102.74

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Solution

The fourth proportional to 20,257.55, 30,367.85 and 7,102.74 is: 10,647.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,257.55 : 30,367.85 = 7,102.74 : x
  2. Step 2: Convert to fraction form
    20,257.55/30,367.85 = 7,102.74/x
  3. Step 3: Cross multiply
    20,257.55x = 30,367.85 × 7,102.74
  4. Step 4: Simplify right side
    20,257.55x = 215,694,907.40
  5. Step 5: Solve for x
    x = 215,694,907.40/20,257.55
  6. Step 6: Final answer
    x = 10,647.63

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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.