Home / 18,489.09-25,514.91-10,105.59

Finding the Fourth Proportional to 18,489.09, 25,514.91 and 10,105.59

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Solution

The fourth proportional to 18,489.09, 25,514.91 and 10,105.59 is: 13,945.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,489.09 : 25,514.91 = 10,105.59 : x
  2. Step 2: Convert to fraction form
    18,489.09/25,514.91 = 10,105.59/x
  3. Step 3: Cross multiply
    18,489.09x = 25,514.91 × 10,105.59
  4. Step 4: Simplify right side
    18,489.09x = 257,843,219.35
  5. Step 5: Solve for x
    x = 257,843,219.35/18,489.09
  6. Step 6: Final answer
    x = 13,945.70

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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.