Home / 13,246.40-19,869.55-3,385.66

Finding the Fourth Proportional to 13,246.40, 19,869.55 and 3,385.66

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Solution

The fourth proportional to 13,246.40, 19,869.55 and 3,385.66 is: 5,078.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,246.40 : 19,869.55 = 3,385.66 : x
  2. Step 2: Convert to fraction form
    13,246.40/19,869.55 = 3,385.66/x
  3. Step 3: Cross multiply
    13,246.40x = 19,869.55 × 3,385.66
  4. Step 4: Simplify right side
    13,246.40x = 67,271,540.65
  5. Step 5: Solve for x
    x = 67,271,540.65/13,246.40
  6. Step 6: Final answer
    x = 5,078.48

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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.