Home / 20,171.41-27,828.91-12,511.14

Finding the Fourth Proportional to 20,171.41, 27,828.91 and 12,511.14

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Solution

The fourth proportional to 20,171.41, 27,828.91 and 12,511.14 is: 17,260.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,171.41 : 27,828.91 = 12,511.14 : x
  2. Step 2: Convert to fraction form
    20,171.41/27,828.91 = 12,511.14/x
  3. Step 3: Cross multiply
    20,171.41x = 27,828.91 × 12,511.14
  4. Step 4: Simplify right side
    20,171.41x = 348,171,389.06
  5. Step 5: Solve for x
    x = 348,171,389.06/20,171.41
  6. Step 6: Final answer
    x = 17,260.64

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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.