Home / 13,087.20-19,630.80-3,226.40

Finding the Fourth Proportional to 13,087.20, 19,630.80 and 3,226.40

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Solution

The fourth proportional to 13,087.20, 19,630.80 and 3,226.40 is: 4,839.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,087.20 : 19,630.80 = 3,226.40 : x
  2. Step 2: Convert to fraction form
    13,087.20/19,630.80 = 3,226.40/x
  3. Step 3: Cross multiply
    13,087.20x = 19,630.80 × 3,226.40
  4. Step 4: Simplify right side
    13,087.20x = 63,336,813.12
  5. Step 5: Solve for x
    x = 63,336,813.12/13,087.20
  6. Step 6: Final answer
    x = 4,839.60

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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.