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Finding the Fourth Proportional to 35,371.87, 48,820.12 and 20,274.65

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Solution

The fourth proportional to 35,371.87, 48,820.12 and 20,274.65 is: 27,982.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,371.87 : 48,820.12 = 20,274.65 : x
  2. Step 2: Convert to fraction form
    35,371.87/48,820.12 = 20,274.65/x
  3. Step 3: Cross multiply
    35,371.87x = 48,820.12 × 20,274.65
  4. Step 4: Simplify right side
    35,371.87x = 989,810,845.96
  5. Step 5: Solve for x
    x = 989,810,845.96/35,371.87
  6. Step 6: Final answer
    x = 27,982.99

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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.