Home / 19,636.12-27,084-12,919.60

Finding the Fourth Proportional to 19,636.12, 27,084 and 12,919.60

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Solution

The fourth proportional to 19,636.12, 27,084 and 12,919.60 is: 17,819.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,636.12 : 27,084 = 12,919.60 : x
  2. Step 2: Convert to fraction form
    19,636.12/27,084 = 12,919.60/x
  3. Step 3: Cross multiply
    19,636.12x = 27,084 × 12,919.60
  4. Step 4: Simplify right side
    19,636.12x = 349,914,446.40
  5. Step 5: Solve for x
    x = 349,914,446.40/19,636.12
  6. Step 6: Final answer
    x = 17,819.94

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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.