Home / 13,789.16-20,674.14-7,109.48

Finding the Fourth Proportional to 13,789.16, 20,674.14 and 7,109.48

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Solution

The fourth proportional to 13,789.16, 20,674.14 and 7,109.48 is: 10,659.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,789.16 : 20,674.14 = 7,109.48 : x
  2. Step 2: Convert to fraction form
    13,789.16/20,674.14 = 7,109.48/x
  3. Step 3: Cross multiply
    13,789.16x = 20,674.14 × 7,109.48
  4. Step 4: Simplify right side
    13,789.16x = 146,982,384.85
  5. Step 5: Solve for x
    x = 146,982,384.85/13,789.16
  6. Step 6: Final answer
    x = 10,659.27

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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.