Home / 21,190.03-31,812.68-17,923.86

Finding the Fourth Proportional to 21,190.03, 31,812.68 and 17,923.86

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Solution

The fourth proportional to 21,190.03, 31,812.68 and 17,923.86 is: 26,909.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,190.03 : 31,812.68 = 17,923.86 : x
  2. Step 2: Convert to fraction form
    21,190.03/31,812.68 = 17,923.86/x
  3. Step 3: Cross multiply
    21,190.03x = 31,812.68 × 17,923.86
  4. Step 4: Simplify right side
    21,190.03x = 570,206,067.35
  5. Step 5: Solve for x
    x = 570,206,067.35/21,190.03
  6. Step 6: Final answer
    x = 26,909.17

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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.