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Finding the Fourth Proportional to 13,630.75, 18,810.84 and 8,041.75

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Solution

The fourth proportional to 13,630.75, 18,810.84 and 8,041.75 is: 11,097.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,630.75 : 18,810.84 = 8,041.75 : x
  2. Step 2: Convert to fraction form
    13,630.75/18,810.84 = 8,041.75/x
  3. Step 3: Cross multiply
    13,630.75x = 18,810.84 × 8,041.75
  4. Step 4: Simplify right side
    13,630.75x = 151,272,072.57
  5. Step 5: Solve for x
    x = 151,272,072.57/13,630.75
  6. Step 6: Final answer
    x = 11,097.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.