Home / 18,811.50-28,208.70-8,962.68

Finding the Fourth Proportional to 18,811.50, 28,208.70 and 8,962.68

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Solution

The fourth proportional to 18,811.50, 28,208.70 and 8,962.68 is: 13,439.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,811.50 : 28,208.70 = 8,962.68 : x
  2. Step 2: Convert to fraction form
    18,811.50/28,208.70 = 8,962.68/x
  3. Step 3: Cross multiply
    18,811.50x = 28,208.70 × 8,962.68
  4. Step 4: Simplify right side
    18,811.50x = 252,825,551.32
  5. Step 5: Solve for x
    x = 252,825,551.32/18,811.50
  6. Step 6: Final answer
    x = 13,439.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.