Home / 13,183.12-18,194.76-8,472.40

Finding the Fourth Proportional to 13,183.12, 18,194.76 and 8,472.40

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Solution

The fourth proportional to 13,183.12, 18,194.76 and 8,472.40 is: 11,693.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,183.12 : 18,194.76 = 8,472.40 : x
  2. Step 2: Convert to fraction form
    13,183.12/18,194.76 = 8,472.40/x
  3. Step 3: Cross multiply
    13,183.12x = 18,194.76 × 8,472.40
  4. Step 4: Simplify right side
    13,183.12x = 154,153,284.62
  5. Step 5: Solve for x
    x = 154,153,284.62/13,183.12
  6. Step 6: Final answer
    x = 11,693.23

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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.