Home / 20,157.40-30,240.90-8,464.60

Finding the Fourth Proportional to 20,157.40, 30,240.90 and 8,464.60

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Solution

The fourth proportional to 20,157.40, 30,240.90 and 8,464.60 is: 12,698.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,157.40 : 30,240.90 = 8,464.60 : x
  2. Step 2: Convert to fraction form
    20,157.40/30,240.90 = 8,464.60/x
  3. Step 3: Cross multiply
    20,157.40x = 30,240.90 × 8,464.60
  4. Step 4: Simplify right side
    20,157.40x = 255,977,122.14
  5. Step 5: Solve for x
    x = 255,977,122.14/20,157.40
  6. Step 6: Final answer
    x = 12,698.92

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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.