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Finding the Fourth Proportional to 35,371.50, 48,819.60 and 20,274.28

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Solution

The fourth proportional to 35,371.50, 48,819.60 and 20,274.28 is: 27,982.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,371.50 : 48,819.60 = 20,274.28 : x
  2. Step 2: Convert to fraction form
    35,371.50/48,819.60 = 20,274.28/x
  3. Step 3: Cross multiply
    35,371.50x = 48,819.60 × 20,274.28
  4. Step 4: Simplify right side
    35,371.50x = 989,782,239.89
  5. Step 5: Solve for x
    x = 989,782,239.89/35,371.50
  6. Step 6: Final answer
    x = 27,982.48

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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.