Home / 13,281.32-19,918.66-3,919.48

Finding the Fourth Proportional to 13,281.32, 19,918.66 and 3,919.48

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Solution

The fourth proportional to 13,281.32, 19,918.66 and 3,919.48 is: 5,878.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,281.32 : 19,918.66 = 3,919.48 : x
  2. Step 2: Convert to fraction form
    13,281.32/19,918.66 = 3,919.48/x
  3. Step 3: Cross multiply
    13,281.32x = 19,918.66 × 3,919.48
  4. Step 4: Simplify right side
    13,281.32x = 78,070,789.50
  5. Step 5: Solve for x
    x = 78,070,789.50/13,281.32
  6. Step 6: Final answer
    x = 5,878.24

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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.