Home / 19,627.24-27,078.72-11,128.12

Finding the Fourth Proportional to 19,627.24, 27,078.72 and 11,128.12

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Solution

The fourth proportional to 19,627.24, 27,078.72 and 11,128.12 is: 15,352.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,627.24 : 27,078.72 = 11,128.12 : x
  2. Step 2: Convert to fraction form
    19,627.24/27,078.72 = 11,128.12/x
  3. Step 3: Cross multiply
    19,627.24x = 27,078.72 × 11,128.12
  4. Step 4: Simplify right side
    19,627.24x = 301,335,245.61
  5. Step 5: Solve for x
    x = 301,335,245.61/19,627.24
  6. Step 6: Final answer
    x = 15,352.91

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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.