Home / 13,195.37-18,209.64-7,145.68

Finding the Fourth Proportional to 13,195.37, 18,209.64 and 7,145.68

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Solution

The fourth proportional to 13,195.37, 18,209.64 and 7,145.68 is: 9,861.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,195.37 : 18,209.64 = 7,145.68 : x
  2. Step 2: Convert to fraction form
    13,195.37/18,209.64 = 7,145.68/x
  3. Step 3: Cross multiply
    13,195.37x = 18,209.64 × 7,145.68
  4. Step 4: Simplify right side
    13,195.37x = 130,120,260.36
  5. Step 5: Solve for x
    x = 130,120,260.36/13,195.37
  6. Step 6: Final answer
    x = 9,861.05

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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.