Home / 13,109.03-18,116.12-11,651.03

Finding the Fourth Proportional to 13,109.03, 18,116.12 and 11,651.03

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Solution

The fourth proportional to 13,109.03, 18,116.12 and 11,651.03 is: 16,101.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,109.03 : 18,116.12 = 11,651.03 : x
  2. Step 2: Convert to fraction form
    13,109.03/18,116.12 = 11,651.03/x
  3. Step 3: Cross multiply
    13,109.03x = 18,116.12 × 11,651.03
  4. Step 4: Simplify right side
    13,109.03x = 211,071,457.60
  5. Step 5: Solve for x
    x = 211,071,457.60/13,109.03
  6. Step 6: Final answer
    x = 16,101.23

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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.