Home / 37,939.28-52,356.20-21,172.28

Finding the Fourth Proportional to 37,939.28, 52,356.20 and 21,172.28

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Solution

The fourth proportional to 37,939.28, 52,356.20 and 21,172.28 is: 29,217.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,939.28 : 52,356.20 = 21,172.28 : x
  2. Step 2: Convert to fraction form
    37,939.28/52,356.20 = 21,172.28/x
  3. Step 3: Cross multiply
    37,939.28x = 52,356.20 × 21,172.28
  4. Step 4: Simplify right side
    37,939.28x = 1,108,500,126.14
  5. Step 5: Solve for x
    x = 1,108,500,126.14/37,939.28
  6. Step 6: Final answer
    x = 29,217.74

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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.