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Finding the Fourth Proportional to 39,296, 54,228.48 and 21,632

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Solution

The fourth proportional to 39,296, 54,228.48 and 21,632 is: 29,852.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,296 : 54,228.48 = 21,632 : x
  2. Step 2: Convert to fraction form
    39,296/54,228.48 = 21,632/x
  3. Step 3: Cross multiply
    39,296x = 54,228.48 × 21,632
  4. Step 4: Simplify right side
    39,296x = 1,173,070,479.36
  5. Step 5: Solve for x
    x = 1,173,070,479.36/39,296
  6. Step 6: Final answer
    x = 29,852.16

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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.