Home / 39,286.25-54,215.19-21,381.23

Finding the Fourth Proportional to 39,286.25, 54,215.19 and 21,381.23

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Solution

The fourth proportional to 39,286.25, 54,215.19 and 21,381.23 is: 29,506.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,286.25 : 54,215.19 = 21,381.23 : x
  2. Step 2: Convert to fraction form
    39,286.25/54,215.19 = 21,381.23/x
  3. Step 3: Cross multiply
    39,286.25x = 54,215.19 × 21,381.23
  4. Step 4: Simplify right side
    39,286.25x = 1,159,187,582.42
  5. Step 5: Solve for x
    x = 1,159,187,582.42/39,286.25
  6. Step 6: Final answer
    x = 29,506.19

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1.5x scale

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.