Home / 13,207.72-18,218.46-8,173.48

Finding the Fourth Proportional to 13,207.72, 18,218.46 and 8,173.48

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Solution

The fourth proportional to 13,207.72, 18,218.46 and 8,173.48 is: 11,274.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,207.72 : 18,218.46 = 8,173.48 : x
  2. Step 2: Convert to fraction form
    13,207.72/18,218.46 = 8,173.48/x
  3. Step 3: Cross multiply
    13,207.72x = 18,218.46 × 8,173.48
  4. Step 4: Simplify right side
    13,207.72x = 148,908,218.44
  5. Step 5: Solve for x
    x = 148,908,218.44/13,207.72
  6. Step 6: Final answer
    x = 11,274.33

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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.