Home / 13,681.14-18,867.38-8,636.64

Finding the Fourth Proportional to 13,681.14, 18,867.38 and 8,636.64

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Solution

The fourth proportional to 13,681.14, 18,867.38 and 8,636.64 is: 11,910.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,681.14 : 18,867.38 = 8,636.64 : x
  2. Step 2: Convert to fraction form
    13,681.14/18,867.38 = 8,636.64/x
  3. Step 3: Cross multiply
    13,681.14x = 18,867.38 × 8,636.64
  4. Step 4: Simplify right side
    13,681.14x = 162,950,768.80
  5. Step 5: Solve for x
    x = 162,950,768.80/13,681.14
  6. Step 6: Final answer
    x = 11,910.61

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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.