Home / 20,679.14-28,521.92-13,118.94

Finding the Fourth Proportional to 20,679.14, 28,521.92 and 13,118.94

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Solution

The fourth proportional to 20,679.14, 28,521.92 and 13,118.94 is: 18,094.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,679.14 : 28,521.92 = 13,118.94 : x
  2. Step 2: Convert to fraction form
    20,679.14/28,521.92 = 13,118.94/x
  3. Step 3: Cross multiply
    20,679.14x = 28,521.92 × 13,118.94
  4. Step 4: Simplify right side
    20,679.14x = 374,177,291.57
  5. Step 5: Solve for x
    x = 374,177,291.57/20,679.14
  6. Step 6: Final answer
    x = 18,094.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.