Home / 18,736.71-28,091.21-8,864.43

Finding the Fourth Proportional to 18,736.71, 28,091.21 and 8,864.43

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Solution

The fourth proportional to 18,736.71, 28,091.21 and 8,864.43 is: 13,290.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,736.71 : 28,091.21 = 8,864.43 : x
  2. Step 2: Convert to fraction form
    18,736.71/28,091.21 = 8,864.43/x
  3. Step 3: Cross multiply
    18,736.71x = 28,091.21 × 8,864.43
  4. Step 4: Simplify right side
    18,736.71x = 249,012,520.34
  5. Step 5: Solve for x
    x = 249,012,520.34/18,736.71
  6. Step 6: Final answer
    x = 13,290.09

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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.