Home / 13,195.12-18,209.60-7,530.64

Finding the Fourth Proportional to 13,195.12, 18,209.60 and 7,530.64

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Solution

The fourth proportional to 13,195.12, 18,209.60 and 7,530.64 is: 10,392.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,195.12 : 18,209.60 = 7,530.64 : x
  2. Step 2: Convert to fraction form
    13,195.12/18,209.60 = 7,530.64/x
  3. Step 3: Cross multiply
    13,195.12x = 18,209.60 × 7,530.64
  4. Step 4: Simplify right side
    13,195.12x = 137,129,942.14
  5. Step 5: Solve for x
    x = 137,129,942.14/13,195.12
  6. Step 6: Final answer
    x = 10,392.47

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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.