Home / 19,872.10-27,426.09-12,819.03

Finding the Fourth Proportional to 19,872.10, 27,426.09 and 12,819.03

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Solution

The fourth proportional to 19,872.10, 27,426.09 and 12,819.03 is: 17,691.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,872.10 : 27,426.09 = 12,819.03 : x
  2. Step 2: Convert to fraction form
    19,872.10/27,426.09 = 12,819.03/x
  3. Step 3: Cross multiply
    19,872.10x = 27,426.09 × 12,819.03
  4. Step 4: Simplify right side
    19,872.10x = 351,575,870.49
  5. Step 5: Solve for x
    x = 351,575,870.49/19,872.10
  6. Step 6: Final answer
    x = 17,691.93

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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.