Home / 18,128.12-27,188.94-11,534.72

Finding the Fourth Proportional to 18,128.12, 27,188.94 and 11,534.72

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Solution

The fourth proportional to 18,128.12, 27,188.94 and 11,534.72 is: 17,300.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,128.12 : 27,188.94 = 11,534.72 : x
  2. Step 2: Convert to fraction form
    18,128.12/27,188.94 = 11,534.72/x
  3. Step 3: Cross multiply
    18,128.12x = 27,188.94 × 11,534.72
  4. Step 4: Simplify right side
    18,128.12x = 313,616,877.97
  5. Step 5: Solve for x
    x = 313,616,877.97/18,128.12
  6. Step 6: Final answer
    x = 17,300.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.