Home / 12,083.78-18,126.91-4,186.28

Finding the Fourth Proportional to 12,083.78, 18,126.91 and 4,186.28

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Solution

The fourth proportional to 12,083.78, 18,126.91 and 4,186.28 is: 6,279.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,083.78 : 18,126.91 = 4,186.28 : x
  2. Step 2: Convert to fraction form
    12,083.78/18,126.91 = 4,186.28/x
  3. Step 3: Cross multiply
    12,083.78x = 18,126.91 × 4,186.28
  4. Step 4: Simplify right side
    12,083.78x = 75,884,320.79
  5. Step 5: Solve for x
    x = 75,884,320.79/12,083.78
  6. Step 6: Final answer
    x = 6,279.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.