Home / 12,011.20-18,022.20-4,225.60

Finding the Fourth Proportional to 12,011.20, 18,022.20 and 4,225.60

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Solution

The fourth proportional to 12,011.20, 18,022.20 and 4,225.60 is: 6,340.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,011.20 : 18,022.20 = 4,225.60 : x
  2. Step 2: Convert to fraction form
    12,011.20/18,022.20 = 4,225.60/x
  3. Step 3: Cross multiply
    12,011.20x = 18,022.20 × 4,225.60
  4. Step 4: Simplify right side
    12,011.20x = 76,154,608.32
  5. Step 5: Solve for x
    x = 76,154,608.32/12,011.20
  6. Step 6: Final answer
    x = 6,340.30

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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.