Home / 19,689.72-27,171.22-11,192.77

Finding the Fourth Proportional to 19,689.72, 27,171.22 and 11,192.77

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Solution

The fourth proportional to 19,689.72, 27,171.22 and 11,192.77 is: 15,445.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,689.72 : 27,171.22 = 11,192.77 : x
  2. Step 2: Convert to fraction form
    19,689.72/27,171.22 = 11,192.77/x
  3. Step 3: Cross multiply
    19,689.72x = 27,171.22 × 11,192.77
  4. Step 4: Simplify right side
    19,689.72x = 304,121,256.03
  5. Step 5: Solve for x
    x = 304,121,256.03/19,689.72
  6. Step 6: Final answer
    x = 15,445.69

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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.