Home / 39,286.85-54,214.16-21,381.81

Finding the Fourth Proportional to 39,286.85, 54,214.16 and 21,381.81

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Solution

The fourth proportional to 39,286.85, 54,214.16 and 21,381.81 is: 29,505.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,286.85 : 54,214.16 = 21,381.81 : x
  2. Step 2: Convert to fraction form
    39,286.85/54,214.16 = 21,381.81/x
  3. Step 3: Cross multiply
    39,286.85x = 54,214.16 × 21,381.81
  4. Step 4: Simplify right side
    39,286.85x = 1,159,196,761.52
  5. Step 5: Solve for x
    x = 1,159,196,761.52/39,286.85
  6. Step 6: Final answer
    x = 29,505.98

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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.