Home / 13,872.04-20,781.72-8,237.82

Finding the Fourth Proportional to 13,872.04, 20,781.72 and 8,237.82

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Solution

The fourth proportional to 13,872.04, 20,781.72 and 8,237.82 is: 12,341.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,872.04 : 20,781.72 = 8,237.82 : x
  2. Step 2: Convert to fraction form
    13,872.04/20,781.72 = 8,237.82/x
  3. Step 3: Cross multiply
    13,872.04x = 20,781.72 × 8,237.82
  4. Step 4: Simplify right side
    13,872.04x = 171,196,068.65
  5. Step 5: Solve for x
    x = 171,196,068.65/13,872.04
  6. Step 6: Final answer
    x = 12,341.09

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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.