Home / 30,908.94-42,654.36-16,761.79

Finding the Fourth Proportional to 30,908.94, 42,654.36 and 16,761.79

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Solution

The fourth proportional to 30,908.94, 42,654.36 and 16,761.79 is: 23,131.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,908.94 : 42,654.36 = 16,761.79 : x
  2. Step 2: Convert to fraction form
    30,908.94/42,654.36 = 16,761.79/x
  3. Step 3: Cross multiply
    30,908.94x = 42,654.36 × 16,761.79
  4. Step 4: Simplify right side
    30,908.94x = 714,963,301.15
  5. Step 5: Solve for x
    x = 714,963,301.15/30,908.94
  6. Step 6: Final answer
    x = 23,131.28

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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.