Home / 13,189.02-18,183.87-8,471.58

Finding the Fourth Proportional to 13,189.02, 18,183.87 and 8,471.58

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Solution

The fourth proportional to 13,189.02, 18,183.87 and 8,471.58 is: 11,679.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,189.02 : 18,183.87 = 8,471.58 : x
  2. Step 2: Convert to fraction form
    13,189.02/18,183.87 = 8,471.58/x
  3. Step 3: Cross multiply
    13,189.02x = 18,183.87 × 8,471.58
  4. Step 4: Simplify right side
    13,189.02x = 154,046,109.41
  5. Step 5: Solve for x
    x = 154,046,109.41/13,189.02
  6. Step 6: Final answer
    x = 11,679.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.