Home / 39,286.64-54,215.72-21,381.62

Finding the Fourth Proportional to 39,286.64, 54,215.72 and 21,381.62

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Solution

The fourth proportional to 39,286.64, 54,215.72 and 21,381.62 is: 29,506.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,286.64 : 54,215.72 = 21,381.62 : x
  2. Step 2: Convert to fraction form
    39,286.64/54,215.72 = 21,381.62/x
  3. Step 3: Cross multiply
    39,286.64x = 54,215.72 × 21,381.62
  4. Step 4: Simplify right side
    39,286.64x = 1,159,219,545.08
  5. Step 5: Solve for x
    x = 1,159,219,545.08/39,286.64
  6. Step 6: Final answer
    x = 29,506.72

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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.