Home / 20,187.23-27,857.98-11,234.65

Finding the Fourth Proportional to 20,187.23, 27,857.98 and 11,234.65

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Solution

The fourth proportional to 20,187.23, 27,857.98 and 11,234.65 is: 15,503.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,187.23 : 27,857.98 = 11,234.65 : x
  2. Step 2: Convert to fraction form
    20,187.23/27,857.98 = 11,234.65/x
  3. Step 3: Cross multiply
    20,187.23x = 27,857.98 × 11,234.65
  4. Step 4: Simplify right side
    20,187.23x = 312,974,588.44
  5. Step 5: Solve for x
    x = 312,974,588.44/20,187.23
  6. Step 6: Final answer
    x = 15,503.60

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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.