Home / 18,677.28-28,011.78-11,283.96

Finding the Fourth Proportional to 18,677.28, 28,011.78 and 11,283.96

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Solution

The fourth proportional to 18,677.28, 28,011.78 and 11,283.96 is: 16,923.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,677.28 : 28,011.78 = 11,283.96 : x
  2. Step 2: Convert to fraction form
    18,677.28/28,011.78 = 11,283.96/x
  3. Step 3: Cross multiply
    18,677.28x = 28,011.78 × 11,283.96
  4. Step 4: Simplify right side
    18,677.28x = 316,083,805.05
  5. Step 5: Solve for x
    x = 316,083,805.05/18,677.28
  6. Step 6: Final answer
    x = 16,923.44

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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.