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Finding the Fourth Proportional to 17,189.78, 25,784.68 and 4,709.90

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Solution

The fourth proportional to 17,189.78, 25,784.68 and 4,709.90 is: 7,064.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,189.78 : 25,784.68 = 4,709.90 : x
  2. Step 2: Convert to fraction form
    17,189.78/25,784.68 = 4,709.90/x
  3. Step 3: Cross multiply
    17,189.78x = 25,784.68 × 4,709.90
  4. Step 4: Simplify right side
    17,189.78x = 121,443,264.33
  5. Step 5: Solve for x
    x = 121,443,264.33/17,189.78
  6. Step 6: Final answer
    x = 7,064.85

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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.