Home / 13,450.28-20,160.09-6,420.29

Finding the Fourth Proportional to 13,450.28, 20,160.09 and 6,420.29

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Solution

The fourth proportional to 13,450.28, 20,160.09 and 6,420.29 is: 9,623.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,450.28 : 20,160.09 = 6,420.29 : x
  2. Step 2: Convert to fraction form
    13,450.28/20,160.09 = 6,420.29/x
  3. Step 3: Cross multiply
    13,450.28x = 20,160.09 × 6,420.29
  4. Step 4: Simplify right side
    13,450.28x = 129,433,523.43
  5. Step 5: Solve for x
    x = 129,433,523.43/13,450.28
  6. Step 6: Final answer
    x = 9,623.11

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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.