Home / 13,790.50-20,686.17-3,402.25

Finding the Fourth Proportional to 13,790.50, 20,686.17 and 3,402.25

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Solution

The fourth proportional to 13,790.50, 20,686.17 and 3,402.25 is: 5,103.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,790.50 : 20,686.17 = 3,402.25 : x
  2. Step 2: Convert to fraction form
    13,790.50/20,686.17 = 3,402.25/x
  3. Step 3: Cross multiply
    13,790.50x = 20,686.17 × 3,402.25
  4. Step 4: Simplify right side
    13,790.50x = 70,379,521.88
  5. Step 5: Solve for x
    x = 70,379,521.88/13,790.50
  6. Step 6: Final answer
    x = 5,103.48

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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.