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Finding the Fourth Proportional to 13,496.69, 18,620.48 and 8,461.13

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Solution

The fourth proportional to 13,496.69, 18,620.48 and 8,461.13 is: 11,673.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,496.69 : 18,620.48 = 8,461.13 : x
  2. Step 2: Convert to fraction form
    13,496.69/18,620.48 = 8,461.13/x
  3. Step 3: Cross multiply
    13,496.69x = 18,620.48 × 8,461.13
  4. Step 4: Simplify right side
    13,496.69x = 157,550,229.99
  5. Step 5: Solve for x
    x = 157,550,229.99/13,496.69
  6. Step 6: Final answer
    x = 11,673.25

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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.