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Finding the Fourth Proportional to 12,352.80, 18,537.30 and 7,087.80

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Solution

The fourth proportional to 12,352.80, 18,537.30 and 7,087.80 is: 10,636.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,352.80 : 18,537.30 = 7,087.80 : x
  2. Step 2: Convert to fraction form
    12,352.80/18,537.30 = 7,087.80/x
  3. Step 3: Cross multiply
    12,352.80x = 18,537.30 × 7,087.80
  4. Step 4: Simplify right side
    12,352.80x = 131,388,674.94
  5. Step 5: Solve for x
    x = 131,388,674.94/12,352.80
  6. Step 6: Final answer
    x = 10,636.35

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1.5x scale

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.