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Finding the Fourth Proportional to 34,786.68, 47,994.28 and 19,677.88

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Solution

The fourth proportional to 34,786.68, 47,994.28 and 19,677.88 is: 27,149.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,786.68 : 47,994.28 = 19,677.88 : x
  2. Step 2: Convert to fraction form
    34,786.68/47,994.28 = 19,677.88/x
  3. Step 3: Cross multiply
    34,786.68x = 47,994.28 × 19,677.88
  4. Step 4: Simplify right side
    34,786.68x = 944,425,682.53
  5. Step 5: Solve for x
    x = 944,425,682.53/34,786.68
  6. Step 6: Final answer
    x = 27,149.06

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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.