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Finding the Fourth Proportional to 27,128.40, 37,435.41 and 15,189

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Solution

The fourth proportional to 27,128.40, 37,435.41 and 15,189 is: 20,959.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,128.40 : 37,435.41 = 15,189 : x
  2. Step 2: Convert to fraction form
    27,128.40/37,435.41 = 15,189/x
  3. Step 3: Cross multiply
    27,128.40x = 37,435.41 × 15,189
  4. Step 4: Simplify right side
    27,128.40x = 568,606,442.49
  5. Step 5: Solve for x
    x = 568,606,442.49/27,128.40
  6. Step 6: Final answer
    x = 20,959.82

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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.