Home / 13,561.04-18,716.08-8,183.74

Finding the Fourth Proportional to 13,561.04, 18,716.08 and 8,183.74

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Solution

The fourth proportional to 13,561.04, 18,716.08 and 8,183.74 is: 11,294.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,561.04 : 18,716.08 = 8,183.74 : x
  2. Step 2: Convert to fraction form
    13,561.04/18,716.08 = 8,183.74/x
  3. Step 3: Cross multiply
    13,561.04x = 18,716.08 × 8,183.74
  4. Step 4: Simplify right side
    13,561.04x = 153,167,532.54
  5. Step 5: Solve for x
    x = 153,167,532.54/13,561.04
  6. Step 6: Final answer
    x = 11,294.67

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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.