Home / 13,470.36-20,212.98-5,679

Finding the Fourth Proportional to 13,470.36, 20,212.98 and 5,679

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Solution

The fourth proportional to 13,470.36, 20,212.98 and 5,679 is: 8,521.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,470.36 : 20,212.98 = 5,679 : x
  2. Step 2: Convert to fraction form
    13,470.36/20,212.98 = 5,679/x
  3. Step 3: Cross multiply
    13,470.36x = 20,212.98 × 5,679
  4. Step 4: Simplify right side
    13,470.36x = 114,789,513.42
  5. Step 5: Solve for x
    x = 114,789,513.42/13,470.36
  6. Step 6: Final answer
    x = 8,521.64

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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.