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Finding the Fourth Proportional to 35,679.43, 49,239 and 19,763.56

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Solution

The fourth proportional to 35,679.43, 49,239 and 19,763.56 is: 27,274.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,679.43 : 49,239 = 19,763.56 : x
  2. Step 2: Convert to fraction form
    35,679.43/49,239 = 19,763.56/x
  3. Step 3: Cross multiply
    35,679.43x = 49,239 × 19,763.56
  4. Step 4: Simplify right side
    35,679.43x = 973,137,930.84
  5. Step 5: Solve for x
    x = 973,137,930.84/35,679.43
  6. Step 6: Final answer
    x = 27,274.48

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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.