Home / 13,679.23-20,519.98-3,818.62

Finding the Fourth Proportional to 13,679.23, 20,519.98 and 3,818.62

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Solution

The fourth proportional to 13,679.23, 20,519.98 and 3,818.62 is: 5,728.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,679.23 : 20,519.98 = 3,818.62 : x
  2. Step 2: Convert to fraction form
    13,679.23/20,519.98 = 3,818.62/x
  3. Step 3: Cross multiply
    13,679.23x = 20,519.98 × 3,818.62
  4. Step 4: Simplify right side
    13,679.23x = 78,358,006.03
  5. Step 5: Solve for x
    x = 78,358,006.03/13,679.23
  6. Step 6: Final answer
    x = 5,728.25

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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.