Home / 13,719.90-20,579.38-5,817.33

Finding the Fourth Proportional to 13,719.90, 20,579.38 and 5,817.33

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Solution

The fourth proportional to 13,719.90, 20,579.38 and 5,817.33 is: 8,725.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,719.90 : 20,579.38 = 5,817.33 : x
  2. Step 2: Convert to fraction form
    13,719.90/20,579.38 = 5,817.33/x
  3. Step 3: Cross multiply
    13,719.90x = 20,579.38 × 5,817.33
  4. Step 4: Simplify right side
    13,719.90x = 119,717,015.57
  5. Step 5: Solve for x
    x = 119,717,015.57/13,719.90
  6. Step 6: Final answer
    x = 8,725.79

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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.