Home / 20,084.18-27,718.11-11,131.70

Finding the Fourth Proportional to 20,084.18, 27,718.11 and 11,131.70

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Solution

The fourth proportional to 20,084.18, 27,718.11 and 11,131.70 is: 15,362.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,084.18 : 27,718.11 = 11,131.70 : x
  2. Step 2: Convert to fraction form
    20,084.18/27,718.11 = 11,131.70/x
  3. Step 3: Cross multiply
    20,084.18x = 27,718.11 × 11,131.70
  4. Step 4: Simplify right side
    20,084.18x = 308,549,546.50
  5. Step 5: Solve for x
    x = 308,549,546.50/20,084.18
  6. Step 6: Final answer
    x = 15,362.82

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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.