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Finding the Fourth Proportional to 27,105.99, 37,407.83 and 15,169.20

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Solution

The fourth proportional to 27,105.99, 37,407.83 and 15,169.20 is: 20,934.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,105.99 : 37,407.83 = 15,169.20 : x
  2. Step 2: Convert to fraction form
    27,105.99/37,407.83 = 15,169.20/x
  3. Step 3: Cross multiply
    27,105.99x = 37,407.83 × 15,169.20
  4. Step 4: Simplify right side
    27,105.99x = 567,446,778.99
  5. Step 5: Solve for x
    x = 567,446,778.99/27,105.99
  6. Step 6: Final answer
    x = 20,934.37

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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.