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Finding the Fourth Proportional to 35,253.50, 48,648.94 and 20,145.20

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Solution

The fourth proportional to 35,253.50, 48,648.94 and 20,145.20 is: 27,799.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,253.50 : 48,648.94 = 20,145.20 : x
  2. Step 2: Convert to fraction form
    35,253.50/48,648.94 = 20,145.20/x
  3. Step 3: Cross multiply
    35,253.50x = 48,648.94 × 20,145.20
  4. Step 4: Simplify right side
    35,253.50x = 980,042,697.35
  5. Step 5: Solve for x
    x = 980,042,697.35/35,253.50
  6. Step 6: Final answer
    x = 27,799.87

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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.