Home / 11,961.41-18,031.68-11,158.58

Finding the Fourth Proportional to 11,961.41, 18,031.68 and 11,158.58

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Solution

The fourth proportional to 11,961.41, 18,031.68 and 11,158.58 is: 16,821.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,961.41 : 18,031.68 = 11,158.58 : x
  2. Step 2: Convert to fraction form
    11,961.41/18,031.68 = 11,158.58/x
  3. Step 3: Cross multiply
    11,961.41x = 18,031.68 × 11,158.58
  4. Step 4: Simplify right side
    11,961.41x = 201,207,988.89
  5. Step 5: Solve for x
    x = 201,207,988.89/11,961.41
  6. Step 6: Final answer
    x = 16,821.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.