Home / 12,309.76-18,453.30-4,909.60

Finding the Fourth Proportional to 12,309.76, 18,453.30 and 4,909.60

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Solution

The fourth proportional to 12,309.76, 18,453.30 and 4,909.60 is: 7,359.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,309.76 : 18,453.30 = 4,909.60 : x
  2. Step 2: Convert to fraction form
    12,309.76/18,453.30 = 4,909.60/x
  3. Step 3: Cross multiply
    12,309.76x = 18,453.30 × 4,909.60
  4. Step 4: Simplify right side
    12,309.76x = 90,598,321.68
  5. Step 5: Solve for x
    x = 90,598,321.68/12,309.76
  6. Step 6: Final answer
    x = 7,359.88

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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.