Home / 18,913.43-28,369.13-5,764.78

Finding the Fourth Proportional to 18,913.43, 28,369.13 and 5,764.78

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Solution

The fourth proportional to 18,913.43, 28,369.13 and 5,764.78 is: 8,646.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,913.43 : 28,369.13 = 5,764.78 : x
  2. Step 2: Convert to fraction form
    18,913.43/28,369.13 = 5,764.78/x
  3. Step 3: Cross multiply
    18,913.43x = 28,369.13 × 5,764.78
  4. Step 4: Simplify right side
    18,913.43x = 163,541,799.88
  5. Step 5: Solve for x
    x = 163,541,799.88/18,913.43
  6. Step 6: Final answer
    x = 8,646.86

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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.