Home / 39,286.86-54,214.41-21,381.47

Finding the Fourth Proportional to 39,286.86, 54,214.41 and 21,381.47

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Solution

The fourth proportional to 39,286.86, 54,214.41 and 21,381.47 is: 29,505.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,286.86 : 54,214.41 = 21,381.47 : x
  2. Step 2: Convert to fraction form
    39,286.86/54,214.41 = 21,381.47/x
  3. Step 3: Cross multiply
    39,286.86x = 54,214.41 × 21,381.47
  4. Step 4: Simplify right side
    39,286.86x = 1,159,183,793.40
  5. Step 5: Solve for x
    x = 1,159,183,793.40/39,286.86
  6. Step 6: Final answer
    x = 29,505.64

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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.