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Finding the Fourth Proportional to 37,939.92, 52,357.04 and 21,172.92

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Solution

The fourth proportional to 37,939.92, 52,357.04 and 21,172.92 is: 29,218.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,939.92 : 52,357.04 = 21,172.92 : x
  2. Step 2: Convert to fraction form
    37,939.92/52,357.04 = 21,172.92/x
  3. Step 3: Cross multiply
    37,939.92x = 52,357.04 × 21,172.92
  4. Step 4: Simplify right side
    37,939.92x = 1,108,551,419.36
  5. Step 5: Solve for x
    x = 1,108,551,419.36/37,939.92
  6. Step 6: Final answer
    x = 29,218.60

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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.