Home / 13,185.20-18,194.66-7,520.19

Finding the Fourth Proportional to 13,185.20, 18,194.66 and 7,520.19

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Solution

The fourth proportional to 13,185.20, 18,194.66 and 7,520.19 is: 10,377.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,185.20 : 18,194.66 = 7,520.19 : x
  2. Step 2: Convert to fraction form
    13,185.20/18,194.66 = 7,520.19/x
  3. Step 3: Cross multiply
    13,185.20x = 18,194.66 × 7,520.19
  4. Step 4: Simplify right side
    13,185.20x = 136,827,222.56
  5. Step 5: Solve for x
    x = 136,827,222.56/13,185.20
  6. Step 6: Final answer
    x = 10,377.34

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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.