Home / 13,704.50-18,904.92-9,220.62

Finding the Fourth Proportional to 13,704.50, 18,904.92 and 9,220.62

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Solution

The fourth proportional to 13,704.50, 18,904.92 and 9,220.62 is: 12,719.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,704.50 : 18,904.92 = 9,220.62 : x
  2. Step 2: Convert to fraction form
    13,704.50/18,904.92 = 9,220.62/x
  3. Step 3: Cross multiply
    13,704.50x = 18,904.92 × 9,220.62
  4. Step 4: Simplify right side
    13,704.50x = 174,315,083.45
  5. Step 5: Solve for x
    x = 174,315,083.45/13,704.50
  6. Step 6: Final answer
    x = 12,719.55

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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.