Home / 13,185.63-18,195.81-7,520.25

Finding the Fourth Proportional to 13,185.63, 18,195.81 and 7,520.25

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Solution

The fourth proportional to 13,185.63, 18,195.81 and 7,520.25 is: 10,377.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,185.63 : 18,195.81 = 7,520.25 : x
  2. Step 2: Convert to fraction form
    13,185.63/18,195.81 = 7,520.25/x
  3. Step 3: Cross multiply
    13,185.63x = 18,195.81 × 7,520.25
  4. Step 4: Simplify right side
    13,185.63x = 136,837,104.44
  5. Step 5: Solve for x
    x = 136,837,104.44/13,185.63
  6. Step 6: Final answer
    x = 10,377.74

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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.