Home / 20,147.69-30,190.75-8,454.53

Finding the Fourth Proportional to 20,147.69, 30,190.75 and 8,454.53

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Solution

The fourth proportional to 20,147.69, 30,190.75 and 8,454.53 is: 12,668.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,147.69 : 30,190.75 = 8,454.53 : x
  2. Step 2: Convert to fraction form
    20,147.69/30,190.75 = 8,454.53/x
  3. Step 3: Cross multiply
    20,147.69x = 30,190.75 × 8,454.53
  4. Step 4: Simplify right side
    20,147.69x = 255,248,601.60
  5. Step 5: Solve for x
    x = 255,248,601.60/20,147.69
  6. Step 6: Final answer
    x = 12,668.88

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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.