Home / 13,821.20-20,806.46-12,596.48

Finding the Fourth Proportional to 13,821.20, 20,806.46 and 12,596.48

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Solution

The fourth proportional to 13,821.20, 20,806.46 and 12,596.48 is: 18,962.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,821.20 : 20,806.46 = 12,596.48 : x
  2. Step 2: Convert to fraction form
    13,821.20/20,806.46 = 12,596.48/x
  3. Step 3: Cross multiply
    13,821.20x = 20,806.46 × 12,596.48
  4. Step 4: Simplify right side
    13,821.20x = 262,088,157.26
  5. Step 5: Solve for x
    x = 262,088,157.26/13,821.20
  6. Step 6: Final answer
    x = 18,962.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.