Home / 17,885.72-26,828.78-5,405.85

Finding the Fourth Proportional to 17,885.72, 26,828.78 and 5,405.85

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Solution

The fourth proportional to 17,885.72, 26,828.78 and 5,405.85 is: 8,108.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,885.72 : 26,828.78 = 5,405.85 : x
  2. Step 2: Convert to fraction form
    17,885.72/26,828.78 = 5,405.85/x
  3. Step 3: Cross multiply
    17,885.72x = 26,828.78 × 5,405.85
  4. Step 4: Simplify right side
    17,885.72x = 145,032,360.36
  5. Step 5: Solve for x
    x = 145,032,360.36/17,885.72
  6. Step 6: Final answer
    x = 8,108.84

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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.