Home / 30,910.75-42,657.10-16,763.59

Finding the Fourth Proportional to 30,910.75, 42,657.10 and 16,763.59

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Solution

The fourth proportional to 30,910.75, 42,657.10 and 16,763.59 is: 23,133.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,910.75 : 42,657.10 = 16,763.59 : x
  2. Step 2: Convert to fraction form
    30,910.75/42,657.10 = 16,763.59/x
  3. Step 3: Cross multiply
    30,910.75x = 42,657.10 × 16,763.59
  4. Step 4: Simplify right side
    30,910.75x = 715,086,134.99
  5. Step 5: Solve for x
    x = 715,086,134.99/30,910.75
  6. Step 6: Final answer
    x = 23,133.90

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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.