Home / 19,877.10-27,432.99-12,824.04

Finding the Fourth Proportional to 19,877.10, 27,432.99 and 12,824.04

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Solution

The fourth proportional to 19,877.10, 27,432.99 and 12,824.04 is: 17,698.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,877.10 : 27,432.99 = 12,824.04 : x
  2. Step 2: Convert to fraction form
    19,877.10/27,432.99 = 12,824.04/x
  3. Step 3: Cross multiply
    19,877.10x = 27,432.99 × 12,824.04
  4. Step 4: Simplify right side
    19,877.10x = 351,801,761.08
  5. Step 5: Solve for x
    x = 351,801,761.08/19,877.10
  6. Step 6: Final answer
    x = 17,698.85

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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.