Home / 13,078.82-19,615.46-4,311.65

Finding the Fourth Proportional to 13,078.82, 19,615.46 and 4,311.65

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Solution

The fourth proportional to 13,078.82, 19,615.46 and 4,311.65 is: 6,466.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,078.82 : 19,615.46 = 4,311.65 : x
  2. Step 2: Convert to fraction form
    13,078.82/19,615.46 = 4,311.65/x
  3. Step 3: Cross multiply
    13,078.82x = 19,615.46 × 4,311.65
  4. Step 4: Simplify right side
    13,078.82x = 84,574,878.47
  5. Step 5: Solve for x
    x = 84,574,878.47/13,078.82
  6. Step 6: Final answer
    x = 6,466.56

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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.