Home / 19,560.72-27,005.49-12,857.57

Finding the Fourth Proportional to 19,560.72, 27,005.49 and 12,857.57

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Solution

The fourth proportional to 19,560.72, 27,005.49 and 12,857.57 is: 17,751.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,560.72 : 27,005.49 = 12,857.57 : x
  2. Step 2: Convert to fraction form
    19,560.72/27,005.49 = 12,857.57/x
  3. Step 3: Cross multiply
    19,560.72x = 27,005.49 × 12,857.57
  4. Step 4: Simplify right side
    19,560.72x = 347,224,843.03
  5. Step 5: Solve for x
    x = 347,224,843.03/19,560.72
  6. Step 6: Final answer
    x = 17,751.13

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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.