Home / 21,724.37-29,972.66-12,162.86

Finding the Fourth Proportional to 21,724.37, 29,972.66 and 12,162.86

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Solution

The fourth proportional to 21,724.37, 29,972.66 and 12,162.86 is: 16,780.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,724.37 : 29,972.66 = 12,162.86 : x
  2. Step 2: Convert to fraction form
    21,724.37/29,972.66 = 12,162.86/x
  3. Step 3: Cross multiply
    21,724.37x = 29,972.66 × 12,162.86
  4. Step 4: Simplify right side
    21,724.37x = 364,553,147.95
  5. Step 5: Solve for x
    x = 364,553,147.95/21,724.37
  6. Step 6: Final answer
    x = 16,780.84

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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.