Home / 22,644.20-31,278.90-18,879.68

Finding the Fourth Proportional to 22,644.20, 31,278.90 and 18,879.68

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Solution

The fourth proportional to 22,644.20, 31,278.90 and 18,879.68 is: 26,078.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,644.20 : 31,278.90 = 18,879.68 : x
  2. Step 2: Convert to fraction form
    22,644.20/31,278.90 = 18,879.68/x
  3. Step 3: Cross multiply
    22,644.20x = 31,278.90 × 18,879.68
  4. Step 4: Simplify right side
    22,644.20x = 590,535,622.75
  5. Step 5: Solve for x
    x = 590,535,622.75/22,644.20
  6. Step 6: Final answer
    x = 26,078.89

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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.