Home / 28,201.72-38,864.78-20,230.14

Finding the Fourth Proportional to 28,201.72, 38,864.78 and 20,230.14

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Solution

The fourth proportional to 28,201.72, 38,864.78 and 20,230.14 is: 27,879.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,201.72 : 38,864.78 = 20,230.14 : x
  2. Step 2: Convert to fraction form
    28,201.72/38,864.78 = 20,230.14/x
  3. Step 3: Cross multiply
    28,201.72x = 38,864.78 × 20,230.14
  4. Step 4: Simplify right side
    28,201.72x = 786,239,940.47
  5. Step 5: Solve for x
    x = 786,239,940.47/28,201.72
  6. Step 6: Final answer
    x = 27,879.15

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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.