Home / 13,872.41-20,810.68-5,106.65

Finding the Fourth Proportional to 13,872.41, 20,810.68 and 5,106.65

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Solution

The fourth proportional to 13,872.41, 20,810.68 and 5,106.65 is: 7,660.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,872.41 : 20,810.68 = 5,106.65 : x
  2. Step 2: Convert to fraction form
    13,872.41/20,810.68 = 5,106.65/x
  3. Step 3: Cross multiply
    13,872.41x = 20,810.68 × 5,106.65
  4. Step 4: Simplify right side
    13,872.41x = 106,272,907.86
  5. Step 5: Solve for x
    x = 106,272,907.86/13,872.41
  6. Step 6: Final answer
    x = 7,660.74

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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.