Home / 13,119.12-18,109.44-9,610.20

Finding the Fourth Proportional to 13,119.12, 18,109.44 and 9,610.20

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Solution

The fourth proportional to 13,119.12, 18,109.44 and 9,610.20 is: 13,265.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,119.12 : 18,109.44 = 9,610.20 : x
  2. Step 2: Convert to fraction form
    13,119.12/18,109.44 = 9,610.20/x
  3. Step 3: Cross multiply
    13,119.12x = 18,109.44 × 9,610.20
  4. Step 4: Simplify right side
    13,119.12x = 174,035,340.29
  5. Step 5: Solve for x
    x = 174,035,340.29/13,119.12
  6. Step 6: Final answer
    x = 13,265.78

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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.