Home / 13,178.85-19,766.83-3,318.13

Finding the Fourth Proportional to 13,178.85, 19,766.83 and 3,318.13

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Solution

The fourth proportional to 13,178.85, 19,766.83 and 3,318.13 is: 4,976.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,178.85 : 19,766.83 = 3,318.13 : x
  2. Step 2: Convert to fraction form
    13,178.85/19,766.83 = 3,318.13/x
  3. Step 3: Cross multiply
    13,178.85x = 19,766.83 × 3,318.13
  4. Step 4: Simplify right side
    13,178.85x = 65,588,928.04
  5. Step 5: Solve for x
    x = 65,588,928.04/13,178.85
  6. Step 6: Final answer
    x = 4,976.83

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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.