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Finding the Fourth Proportional to 34,389.60, 51,519.60 and 17,692.80

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Solution

The fourth proportional to 34,389.60, 51,519.60 and 17,692.80 is: 26,505.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,389.60 : 51,519.60 = 17,692.80 : x
  2. Step 2: Convert to fraction form
    34,389.60/51,519.60 = 17,692.80/x
  3. Step 3: Cross multiply
    34,389.60x = 51,519.60 × 17,692.80
  4. Step 4: Simplify right side
    34,389.60x = 911,525,978.88
  5. Step 5: Solve for x
    x = 911,525,978.88/34,389.60
  6. Step 6: Final answer
    x = 26,505.86

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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.