Home / 30,729.46-42,409.83-18,800.73

Finding the Fourth Proportional to 30,729.46, 42,409.83 and 18,800.73

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Solution

The fourth proportional to 30,729.46, 42,409.83 and 18,800.73 is: 25,946.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,729.46 : 42,409.83 = 18,800.73 : x
  2. Step 2: Convert to fraction form
    30,729.46/42,409.83 = 18,800.73/x
  3. Step 3: Cross multiply
    30,729.46x = 42,409.83 × 18,800.73
  4. Step 4: Simplify right side
    30,729.46x = 797,335,763.18
  5. Step 5: Solve for x
    x = 797,335,763.18/30,729.46
  6. Step 6: Final answer
    x = 25,946.95

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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.