Home / 39,487.17-54,490.82-21,582.03

Finding the Fourth Proportional to 39,487.17, 54,490.82 and 21,582.03

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Solution

The fourth proportional to 39,487.17, 54,490.82 and 21,582.03 is: 29,782.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,487.17 : 54,490.82 = 21,582.03 : x
  2. Step 2: Convert to fraction form
    39,487.17/54,490.82 = 21,582.03/x
  3. Step 3: Cross multiply
    39,487.17x = 54,490.82 × 21,582.03
  4. Step 4: Simplify right side
    39,487.17x = 1,176,022,404.05
  5. Step 5: Solve for x
    x = 1,176,022,404.05/39,487.17
  6. Step 6: Final answer
    x = 29,782.39

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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.