Home / 12,506.70-18,760.86-4,186.38

Finding the Fourth Proportional to 12,506.70, 18,760.86 and 4,186.38

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Solution

The fourth proportional to 12,506.70, 18,760.86 and 4,186.38 is: 6,279.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,506.70 : 18,760.86 = 4,186.38 : x
  2. Step 2: Convert to fraction form
    12,506.70/18,760.86 = 4,186.38/x
  3. Step 3: Cross multiply
    12,506.70x = 18,760.86 × 4,186.38
  4. Step 4: Simplify right side
    12,506.70x = 78,540,089.09
  5. Step 5: Solve for x
    x = 78,540,089.09/12,506.70
  6. Step 6: Final answer
    x = 6,279.84

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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.