Home / 13,197.20-19,795.80-11,123.60

Finding the Fourth Proportional to 13,197.20, 19,795.80 and 11,123.60

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Solution

The fourth proportional to 13,197.20, 19,795.80 and 11,123.60 is: 16,685.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,197.20 : 19,795.80 = 11,123.60 : x
  2. Step 2: Convert to fraction form
    13,197.20/19,795.80 = 11,123.60/x
  3. Step 3: Cross multiply
    13,197.20x = 19,795.80 × 11,123.60
  4. Step 4: Simplify right side
    13,197.20x = 220,200,560.88
  5. Step 5: Solve for x
    x = 220,200,560.88/13,197.20
  6. Step 6: Final answer
    x = 16,685.40

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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.