Home / 13,161.43-18,156.94-7,853.16

Finding the Fourth Proportional to 13,161.43, 18,156.94 and 7,853.16

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Solution

The fourth proportional to 13,161.43, 18,156.94 and 7,853.16 is: 10,833.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,161.43 : 18,156.94 = 7,853.16 : x
  2. Step 2: Convert to fraction form
    13,161.43/18,156.94 = 7,853.16/x
  3. Step 3: Cross multiply
    13,161.43x = 18,156.94 × 7,853.16
  4. Step 4: Simplify right side
    13,161.43x = 142,589,354.93
  5. Step 5: Solve for x
    x = 142,589,354.93/13,161.43
  6. Step 6: Final answer
    x = 10,833.88

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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.