Home / 18,811.87-28,221.51-6,965.74

Finding the Fourth Proportional to 18,811.87, 28,221.51 and 6,965.74

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Solution

The fourth proportional to 18,811.87, 28,221.51 and 6,965.74 is: 10,449.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,811.87 : 28,221.51 = 6,965.74 : x
  2. Step 2: Convert to fraction form
    18,811.87/28,221.51 = 6,965.74/x
  3. Step 3: Cross multiply
    18,811.87x = 28,221.51 × 6,965.74
  4. Step 4: Simplify right side
    18,811.87x = 196,583,666.24
  5. Step 5: Solve for x
    x = 196,583,666.24/18,811.87
  6. Step 6: Final answer
    x = 10,449.98

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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.