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Finding the Fourth Proportional to 35,398.80, 48,844.74 and 20,288.55

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Solution

The fourth proportional to 35,398.80, 48,844.74 and 20,288.55 is: 27,994.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,398.80 : 48,844.74 = 20,288.55 : x
  2. Step 2: Convert to fraction form
    35,398.80/48,844.74 = 20,288.55/x
  3. Step 3: Cross multiply
    35,398.80x = 48,844.74 × 20,288.55
  4. Step 4: Simplify right side
    35,398.80x = 990,988,949.73
  5. Step 5: Solve for x
    x = 990,988,949.73/35,398.80
  6. Step 6: Final answer
    x = 27,994.99

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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.