Home / 38,395.91-52,986.89-21,399.68

Finding the Fourth Proportional to 38,395.91, 52,986.89 and 21,399.68

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Solution

The fourth proportional to 38,395.91, 52,986.89 and 21,399.68 is: 29,531.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,395.91 : 52,986.89 = 21,399.68 : x
  2. Step 2: Convert to fraction form
    38,395.91/52,986.89 = 21,399.68/x
  3. Step 3: Cross multiply
    38,395.91x = 52,986.89 × 21,399.68
  4. Step 4: Simplify right side
    38,395.91x = 1,133,902,383.20
  5. Step 5: Solve for x
    x = 1,133,902,383.20/38,395.91
  6. Step 6: Final answer
    x = 29,531.85

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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.