Home / 20,144.67-27,795.15-12,186.72

Finding the Fourth Proportional to 20,144.67, 27,795.15 and 12,186.72

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Solution

The fourth proportional to 20,144.67, 27,795.15 and 12,186.72 is: 16,814.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,144.67 : 27,795.15 = 12,186.72 : x
  2. Step 2: Convert to fraction form
    20,144.67/27,795.15 = 12,186.72/x
  3. Step 3: Cross multiply
    20,144.67x = 27,795.15 × 12,186.72
  4. Step 4: Simplify right side
    20,144.67x = 338,731,710.41
  5. Step 5: Solve for x
    x = 338,731,710.41/20,144.67
  6. Step 6: Final answer
    x = 16,814.95

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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.