Home / 13,868.65-19,137.26-8,203.61

Finding the Fourth Proportional to 13,868.65, 19,137.26 and 8,203.61

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Solution

The fourth proportional to 13,868.65, 19,137.26 and 8,203.61 is: 11,320.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,868.65 : 19,137.26 = 8,203.61 : x
  2. Step 2: Convert to fraction form
    13,868.65/19,137.26 = 8,203.61/x
  3. Step 3: Cross multiply
    13,868.65x = 19,137.26 × 8,203.61
  4. Step 4: Simplify right side
    13,868.65x = 156,994,685.86
  5. Step 5: Solve for x
    x = 156,994,685.86/13,868.65
  6. Step 6: Final answer
    x = 11,320.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.