Home / 30,908.91-42,654.32-16,761.75

Finding the Fourth Proportional to 30,908.91, 42,654.32 and 16,761.75

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Solution

The fourth proportional to 30,908.91, 42,654.32 and 16,761.75 is: 23,131.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,908.91 : 42,654.32 = 16,761.75 : x
  2. Step 2: Convert to fraction form
    30,908.91/42,654.32 = 16,761.75/x
  3. Step 3: Cross multiply
    30,908.91x = 42,654.32 × 16,761.75
  4. Step 4: Simplify right side
    30,908.91x = 714,961,048.26
  5. Step 5: Solve for x
    x = 714,961,048.26/30,908.91
  6. Step 6: Final answer
    x = 23,131.23

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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.