Home / 39,286.14-54,215.02-21,381.11

Finding the Fourth Proportional to 39,286.14, 54,215.02 and 21,381.11

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Solution

The fourth proportional to 39,286.14, 54,215.02 and 21,381.11 is: 29,506.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,286.14 : 54,215.02 = 21,381.11 : x
  2. Step 2: Convert to fraction form
    39,286.14/54,215.02 = 21,381.11/x
  3. Step 3: Cross multiply
    39,286.14x = 54,215.02 × 21,381.11
  4. Step 4: Simplify right side
    39,286.14x = 1,159,177,306.27
  5. Step 5: Solve for x
    x = 1,159,177,306.27/39,286.14
  6. Step 6: Final answer
    x = 29,506.01

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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.