Home / 18,818.81-28,229.61-6,338.78

Finding the Fourth Proportional to 18,818.81, 28,229.61 and 6,338.78

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Solution

The fourth proportional to 18,818.81, 28,229.61 and 6,338.78 is: 9,508.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,818.81 : 28,229.61 = 6,338.78 : x
  2. Step 2: Convert to fraction form
    18,818.81/28,229.61 = 6,338.78/x
  3. Step 3: Cross multiply
    18,818.81x = 28,229.61 × 6,338.78
  4. Step 4: Simplify right side
    18,818.81x = 178,941,287.28
  5. Step 5: Solve for x
    x = 178,941,287.28/18,818.81
  6. Step 6: Final answer
    x = 9,508.64

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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.