Home / 19,656.30-27,128.21-11,161.23

Finding the Fourth Proportional to 19,656.30, 27,128.21 and 11,161.23

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Solution

The fourth proportional to 19,656.30, 27,128.21 and 11,161.23 is: 15,403.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,656.30 : 27,128.21 = 11,161.23 : x
  2. Step 2: Convert to fraction form
    19,656.30/27,128.21 = 11,161.23/x
  3. Step 3: Cross multiply
    19,656.30x = 27,128.21 × 11,161.23
  4. Step 4: Simplify right side
    19,656.30x = 302,784,135.49
  5. Step 5: Solve for x
    x = 302,784,135.49/19,656.30
  6. Step 6: Final answer
    x = 15,403.92

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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.