Home / 38,142.09-52,636.23-21,375.09

Finding the Fourth Proportional to 38,142.09, 52,636.23 and 21,375.09

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Solution

The fourth proportional to 38,142.09, 52,636.23 and 21,375.09 is: 29,497.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,142.09 : 52,636.23 = 21,375.09 : x
  2. Step 2: Convert to fraction form
    38,142.09/52,636.23 = 21,375.09/x
  3. Step 3: Cross multiply
    38,142.09x = 52,636.23 × 21,375.09
  4. Step 4: Simplify right side
    38,142.09x = 1,125,104,153.51
  5. Step 5: Solve for x
    x = 1,125,104,153.51/38,142.09
  6. Step 6: Final answer
    x = 29,497.71

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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.