Home / 12,186.23-18,279.99-3,421.83

Finding the Fourth Proportional to 12,186.23, 18,279.99 and 3,421.83

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Solution

The fourth proportional to 12,186.23, 18,279.99 and 3,421.83 is: 5,132.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,186.23 : 18,279.99 = 3,421.83 : x
  2. Step 2: Convert to fraction form
    12,186.23/18,279.99 = 3,421.83/x
  3. Step 3: Cross multiply
    12,186.23x = 18,279.99 × 3,421.83
  4. Step 4: Simplify right side
    12,186.23x = 62,551,018.18
  5. Step 5: Solve for x
    x = 62,551,018.18/12,186.23
  6. Step 6: Final answer
    x = 5,132.93

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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.