Home / 18,339.84-25,321.59-12,379.86

Finding the Fourth Proportional to 18,339.84, 25,321.59 and 12,379.86

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Solution

The fourth proportional to 18,339.84, 25,321.59 and 12,379.86 is: 17,092.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,339.84 : 25,321.59 = 12,379.86 : x
  2. Step 2: Convert to fraction form
    18,339.84/25,321.59 = 12,379.86/x
  3. Step 3: Cross multiply
    18,339.84x = 25,321.59 × 12,379.86
  4. Step 4: Simplify right side
    18,339.84x = 313,477,739.18
  5. Step 5: Solve for x
    x = 313,477,739.18/18,339.84
  6. Step 6: Final answer
    x = 17,092.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.