Home / 18,744.14-28,137.81-12,859.22

Finding the Fourth Proportional to 18,744.14, 28,137.81 and 12,859.22

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Solution

The fourth proportional to 18,744.14, 28,137.81 and 12,859.22 is: 19,303.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,744.14 : 28,137.81 = 12,859.22 : x
  2. Step 2: Convert to fraction form
    18,744.14/28,137.81 = 12,859.22/x
  3. Step 3: Cross multiply
    18,744.14x = 28,137.81 × 12,859.22
  4. Step 4: Simplify right side
    18,744.14x = 361,830,289.11
  5. Step 5: Solve for x
    x = 361,830,289.11/18,744.14
  6. Step 6: Final answer
    x = 19,303.65

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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.