Home / 18,790.40-28,188.84-6,311.63

Finding the Fourth Proportional to 18,790.40, 28,188.84 and 6,311.63

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Solution

The fourth proportional to 18,790.40, 28,188.84 and 6,311.63 is: 9,468.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,790.40 : 28,188.84 = 6,311.63 : x
  2. Step 2: Convert to fraction form
    18,790.40/28,188.84 = 6,311.63/x
  3. Step 3: Cross multiply
    18,790.40x = 28,188.84 × 6,311.63
  4. Step 4: Simplify right side
    18,790.40x = 177,917,528.21
  5. Step 5: Solve for x
    x = 177,917,528.21/18,790.40
  6. Step 6: Final answer
    x = 9,468.53

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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.