Home / 13,979.10-20,967.97-5,213.34

Finding the Fourth Proportional to 13,979.10, 20,967.97 and 5,213.34

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Solution

The fourth proportional to 13,979.10, 20,967.97 and 5,213.34 is: 7,819.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,979.10 : 20,967.97 = 5,213.34 : x
  2. Step 2: Convert to fraction form
    13,979.10/20,967.97 = 5,213.34/x
  3. Step 3: Cross multiply
    13,979.10x = 20,967.97 × 5,213.34
  4. Step 4: Simplify right side
    13,979.10x = 109,313,156.72
  5. Step 5: Solve for x
    x = 109,313,156.72/13,979.10
  6. Step 6: Final answer
    x = 7,819.76

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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.