Home / 18,677.80-28,018.14-5,529.96

Finding the Fourth Proportional to 18,677.80, 28,018.14 and 5,529.96

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Solution

The fourth proportional to 18,677.80, 28,018.14 and 5,529.96 is: 8,295.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,677.80 : 28,018.14 = 5,529.96 : x
  2. Step 2: Convert to fraction form
    18,677.80/28,018.14 = 5,529.96/x
  3. Step 3: Cross multiply
    18,677.80x = 28,018.14 × 5,529.96
  4. Step 4: Simplify right side
    18,677.80x = 154,939,193.47
  5. Step 5: Solve for x
    x = 154,939,193.47/18,677.80
  6. Step 6: Final answer
    x = 8,295.37

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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.