Home / 27,128.12-37,435.12-15,189.44

Finding the Fourth Proportional to 27,128.12, 37,435.12 and 15,189.44

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Solution

The fourth proportional to 27,128.12, 37,435.12 and 15,189.44 is: 20,960.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,128.12 : 37,435.12 = 15,189.44 : x
  2. Step 2: Convert to fraction form
    27,128.12/37,435.12 = 15,189.44/x
  3. Step 3: Cross multiply
    27,128.12x = 37,435.12 × 15,189.44
  4. Step 4: Simplify right side
    27,128.12x = 568,618,509.13
  5. Step 5: Solve for x
    x = 568,618,509.13/27,128.12
  6. Step 6: Final answer
    x = 20,960.48

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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.