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Finding the Fourth Proportional to 18,818.65, 28,226.53 and 6,966.86

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Solution

The fourth proportional to 18,818.65, 28,226.53 and 6,966.86 is: 10,449.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,818.65 : 28,226.53 = 6,966.86 : x
  2. Step 2: Convert to fraction form
    18,818.65/28,226.53 = 6,966.86/x
  3. Step 3: Cross multiply
    18,818.65x = 28,226.53 × 6,966.86
  4. Step 4: Simplify right side
    18,818.65x = 196,650,282.80
  5. Step 5: Solve for x
    x = 196,650,282.80/18,818.65
  6. Step 6: Final answer
    x = 10,449.76

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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.