Home / 30,908.88-42,654.12-16,761.68

Finding the Fourth Proportional to 30,908.88, 42,654.12 and 16,761.68

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Solution

The fourth proportional to 30,908.88, 42,654.12 and 16,761.68 is: 23,131.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,908.88 : 42,654.12 = 16,761.68 : x
  2. Step 2: Convert to fraction form
    30,908.88/42,654.12 = 16,761.68/x
  3. Step 3: Cross multiply
    30,908.88x = 42,654.12 × 16,761.68
  4. Step 4: Simplify right side
    30,908.88x = 714,954,710.12
  5. Step 5: Solve for x
    x = 714,954,710.12/30,908.88
  6. Step 6: Final answer
    x = 23,131.05

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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.