Home / 13,667.92-18,861.38-7,699.22

Finding the Fourth Proportional to 13,667.92, 18,861.38 and 7,699.22

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Solution

The fourth proportional to 13,667.92, 18,861.38 and 7,699.22 is: 10,624.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,667.92 : 18,861.38 = 7,699.22 : x
  2. Step 2: Convert to fraction form
    13,667.92/18,861.38 = 7,699.22/x
  3. Step 3: Cross multiply
    13,667.92x = 18,861.38 × 7,699.22
  4. Step 4: Simplify right side
    13,667.92x = 145,217,914.12
  5. Step 5: Solve for x
    x = 145,217,914.12/13,667.92
  6. Step 6: Final answer
    x = 10,624.73

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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.