Home / 13,979.24-20,968.16-5,213.46

Finding the Fourth Proportional to 13,979.24, 20,968.16 and 5,213.46

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Solution

The fourth proportional to 13,979.24, 20,968.16 and 5,213.46 is: 7,819.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,979.24 : 20,968.16 = 5,213.46 : x
  2. Step 2: Convert to fraction form
    13,979.24/20,968.16 = 5,213.46/x
  3. Step 3: Cross multiply
    13,979.24x = 20,968.16 × 5,213.46
  4. Step 4: Simplify right side
    13,979.24x = 109,316,637.37
  5. Step 5: Solve for x
    x = 109,316,637.37/13,979.24
  6. Step 6: Final answer
    x = 7,819.93

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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.