Home / 27,128.72-37,438.92-15,189.68

Finding the Fourth Proportional to 27,128.72, 37,438.92 and 15,189.68

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Solution

The fourth proportional to 27,128.72, 37,438.92 and 15,189.68 is: 20,962.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,128.72 : 37,438.92 = 15,189.68 : x
  2. Step 2: Convert to fraction form
    27,128.72/37,438.92 = 15,189.68/x
  3. Step 3: Cross multiply
    27,128.72x = 37,438.92 × 15,189.68
  4. Step 4: Simplify right side
    27,128.72x = 568,685,214.35
  5. Step 5: Solve for x
    x = 568,685,214.35/27,128.72
  6. Step 6: Final answer
    x = 20,962.48

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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.