Home / 30,958.80-42,723.18-16,811.61

Finding the Fourth Proportional to 30,958.80, 42,723.18 and 16,811.61

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Solution

The fourth proportional to 30,958.80, 42,723.18 and 16,811.61 is: 23,200.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,958.80 : 42,723.18 = 16,811.61 : x
  2. Step 2: Convert to fraction form
    30,958.80/42,723.18 = 16,811.61/x
  3. Step 3: Cross multiply
    30,958.80x = 42,723.18 × 16,811.61
  4. Step 4: Simplify right side
    30,958.80x = 718,245,440.12
  5. Step 5: Solve for x
    x = 718,245,440.12/30,958.80
  6. Step 6: Final answer
    x = 23,200.04

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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.