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Finding the Fourth Proportional to 34,387.80, 51,591.30 and 16,858.20

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Solution

The fourth proportional to 34,387.80, 51,591.30 and 16,858.20 is: 25,292.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,387.80 : 51,591.30 = 16,858.20 : x
  2. Step 2: Convert to fraction form
    34,387.80/51,591.30 = 16,858.20/x
  3. Step 3: Cross multiply
    34,387.80x = 51,591.30 × 16,858.20
  4. Step 4: Simplify right side
    34,387.80x = 869,736,453.66
  5. Step 5: Solve for x
    x = 869,736,453.66/34,387.80
  6. Step 6: Final answer
    x = 25,292.01

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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.