Home / 18,514.78-27,772.17-10,190.51

Finding the Fourth Proportional to 18,514.78, 27,772.17 and 10,190.51

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Solution

The fourth proportional to 18,514.78, 27,772.17 and 10,190.51 is: 15,285.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,514.78 : 27,772.17 = 10,190.51 : x
  2. Step 2: Convert to fraction form
    18,514.78/27,772.17 = 10,190.51/x
  3. Step 3: Cross multiply
    18,514.78x = 27,772.17 × 10,190.51
  4. Step 4: Simplify right side
    18,514.78x = 283,012,503.18
  5. Step 5: Solve for x
    x = 283,012,503.18/18,514.78
  6. Step 6: Final answer
    x = 15,285.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.