Home / 13,195.40-18,195.06-9,005.96

Finding the Fourth Proportional to 13,195.40, 18,195.06 and 9,005.96

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Solution

The fourth proportional to 13,195.40, 18,195.06 and 9,005.96 is: 12,418.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,195.40 : 18,195.06 = 9,005.96 : x
  2. Step 2: Convert to fraction form
    13,195.40/18,195.06 = 9,005.96/x
  3. Step 3: Cross multiply
    13,195.40x = 18,195.06 × 9,005.96
  4. Step 4: Simplify right side
    13,195.40x = 163,863,982.56
  5. Step 5: Solve for x
    x = 163,863,982.56/13,195.40
  6. Step 6: Final answer
    x = 12,418.27

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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.