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Finding the Fourth Proportional to 35,398.70, 48,839.20 and 20,082.71

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Solution

The fourth proportional to 35,398.70, 48,839.20 and 20,082.71 is: 27,707.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,398.70 : 48,839.20 = 20,082.71 : x
  2. Step 2: Convert to fraction form
    35,398.70/48,839.20 = 20,082.71/x
  3. Step 3: Cross multiply
    35,398.70x = 48,839.20 × 20,082.71
  4. Step 4: Simplify right side
    35,398.70x = 980,823,537.73
  5. Step 5: Solve for x
    x = 980,823,537.73/35,398.70
  6. Step 6: Final answer
    x = 27,707.90

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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.