Home / 39,657.62-54,727.58-21,752.78

Finding the Fourth Proportional to 39,657.62, 54,727.58 and 21,752.78

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Solution

The fourth proportional to 39,657.62, 54,727.58 and 21,752.78 is: 30,018.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,657.62 : 54,727.58 = 21,752.78 : x
  2. Step 2: Convert to fraction form
    39,657.62/54,727.58 = 21,752.78/x
  3. Step 3: Cross multiply
    39,657.62x = 54,727.58 × 21,752.78
  4. Step 4: Simplify right side
    39,657.62x = 1,190,476,788.42
  5. Step 5: Solve for x
    x = 1,190,476,788.42/39,657.62
  6. Step 6: Final answer
    x = 30,018.86

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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.