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Finding the Fourth Proportional to 13,245.80, 19,836.30 and 8,839.40

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Solution

The fourth proportional to 13,245.80, 19,836.30 and 8,839.40 is: 13,237.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,245.80 : 19,836.30 = 8,839.40 : x
  2. Step 2: Convert to fraction form
    13,245.80/19,836.30 = 8,839.40/x
  3. Step 3: Cross multiply
    13,245.80x = 19,836.30 × 8,839.40
  4. Step 4: Simplify right side
    13,245.80x = 175,340,990.22
  5. Step 5: Solve for x
    x = 175,340,990.22/13,245.80
  6. Step 6: Final answer
    x = 13,237.48

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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.