Home / 13,600.20-20,429.10-13,110.60

Finding the Fourth Proportional to 13,600.20, 20,429.10 and 13,110.60

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Solution

The fourth proportional to 13,600.20, 20,429.10 and 13,110.60 is: 19,693.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,600.20 : 20,429.10 = 13,110.60 : x
  2. Step 2: Convert to fraction form
    13,600.20/20,429.10 = 13,110.60/x
  3. Step 3: Cross multiply
    13,600.20x = 20,429.10 × 13,110.60
  4. Step 4: Simplify right side
    13,600.20x = 267,837,758.46
  5. Step 5: Solve for x
    x = 267,837,758.46/13,600.20
  6. Step 6: Final answer
    x = 19,693.66

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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.