Home / 39,286.64-54,215.46-21,381.66

Finding the Fourth Proportional to 39,286.64, 54,215.46 and 21,381.66

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Solution

The fourth proportional to 39,286.64, 54,215.46 and 21,381.66 is: 29,506.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,286.64 : 54,215.46 = 21,381.66 : x
  2. Step 2: Convert to fraction form
    39,286.64/54,215.46 = 21,381.66/x
  3. Step 3: Cross multiply
    39,286.64x = 54,215.46 × 21,381.66
  4. Step 4: Simplify right side
    39,286.64x = 1,159,216,532.46
  5. Step 5: Solve for x
    x = 1,159,216,532.46/39,286.64
  6. Step 6: Final answer
    x = 29,506.63

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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.