Home / 39,732.31-54,830.32-21,582.87

Finding the Fourth Proportional to 39,732.31, 54,830.32 and 21,582.87

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Solution

The fourth proportional to 39,732.31, 54,830.32 and 21,582.87 is: 29,784.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,732.31 : 54,830.32 = 21,582.87 : x
  2. Step 2: Convert to fraction form
    39,732.31/54,830.32 = 21,582.87/x
  3. Step 3: Cross multiply
    39,732.31x = 54,830.32 × 21,582.87
  4. Step 4: Simplify right side
    39,732.31x = 1,183,395,489.98
  5. Step 5: Solve for x
    x = 1,183,395,489.98/39,732.31
  6. Step 6: Final answer
    x = 29,784.21

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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.