Home / 39,286.39-54,214.18-21,381.02

Finding the Fourth Proportional to 39,286.39, 54,214.18 and 21,381.02

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Solution

The fourth proportional to 39,286.39, 54,214.18 and 21,381.02 is: 29,505.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,286.39 : 54,214.18 = 21,381.02 : x
  2. Step 2: Convert to fraction form
    39,286.39/54,214.18 = 21,381.02/x
  3. Step 3: Cross multiply
    39,286.39x = 54,214.18 × 21,381.02
  4. Step 4: Simplify right side
    39,286.39x = 1,159,154,466.86
  5. Step 5: Solve for x
    x = 1,159,154,466.86/39,286.39
  6. Step 6: Final answer
    x = 29,505.24

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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.