Home / 13,119.19-18,104.49-7,150.86

Finding the Fourth Proportional to 13,119.19, 18,104.49 and 7,150.86

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Solution

The fourth proportional to 13,119.19, 18,104.49 and 7,150.86 is: 9,868.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,119.19 : 18,104.49 = 7,150.86 : x
  2. Step 2: Convert to fraction form
    13,119.19/18,104.49 = 7,150.86/x
  3. Step 3: Cross multiply
    13,119.19x = 18,104.49 × 7,150.86
  4. Step 4: Simplify right side
    13,119.19x = 129,462,673.36
  5. Step 5: Solve for x
    x = 129,462,673.36/13,119.19
  6. Step 6: Final answer
    x = 9,868.19

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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.