Home / 20,084.19-27,716.19-12,128.37

Finding the Fourth Proportional to 20,084.19, 27,716.19 and 12,128.37

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Solution

The fourth proportional to 20,084.19, 27,716.19 and 12,128.37 is: 16,737.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,084.19 : 27,716.19 = 12,128.37 : x
  2. Step 2: Convert to fraction form
    20,084.19/27,716.19 = 12,128.37/x
  3. Step 3: Cross multiply
    20,084.19x = 27,716.19 × 12,128.37
  4. Step 4: Simplify right side
    20,084.19x = 336,152,146.67
  5. Step 5: Solve for x
    x = 336,152,146.67/20,084.19
  6. Step 6: Final answer
    x = 16,737.15

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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.