Home / 12,508.05-18,762.09-4,186.53

Finding the Fourth Proportional to 12,508.05, 18,762.09 and 4,186.53

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Solution

The fourth proportional to 12,508.05, 18,762.09 and 4,186.53 is: 6,279.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,508.05 : 18,762.09 = 4,186.53 : x
  2. Step 2: Convert to fraction form
    12,508.05/18,762.09 = 4,186.53/x
  3. Step 3: Cross multiply
    12,508.05x = 18,762.09 × 4,186.53
  4. Step 4: Simplify right side
    12,508.05x = 78,548,052.65
  5. Step 5: Solve for x
    x = 78,548,052.65/12,508.05
  6. Step 6: Final answer
    x = 6,279.80

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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.