Home / 13,107.09-19,660.64-6,186.45

Finding the Fourth Proportional to 13,107.09, 19,660.64 and 6,186.45

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Solution

The fourth proportional to 13,107.09, 19,660.64 and 6,186.45 is: 9,279.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,107.09 : 19,660.64 = 6,186.45 : x
  2. Step 2: Convert to fraction form
    13,107.09/19,660.64 = 6,186.45/x
  3. Step 3: Cross multiply
    13,107.09x = 19,660.64 × 6,186.45
  4. Step 4: Simplify right side
    13,107.09x = 121,629,535.40
  5. Step 5: Solve for x
    x = 121,629,535.40/13,107.09
  6. Step 6: Final answer
    x = 9,279.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.