Home / 13,119.05-18,104.22-7,150.70

Finding the Fourth Proportional to 13,119.05, 18,104.22 and 7,150.70

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Solution

The fourth proportional to 13,119.05, 18,104.22 and 7,150.70 is: 9,867.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,119.05 : 18,104.22 = 7,150.70 : x
  2. Step 2: Convert to fraction form
    13,119.05/18,104.22 = 7,150.70/x
  3. Step 3: Cross multiply
    13,119.05x = 18,104.22 × 7,150.70
  4. Step 4: Simplify right side
    13,119.05x = 129,457,845.95
  5. Step 5: Solve for x
    x = 129,457,845.95/13,119.05
  6. Step 6: Final answer
    x = 9,867.93

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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.