Home / 13,099.72-19,539.04-11,129.80

Finding the Fourth Proportional to 13,099.72, 19,539.04 and 11,129.80

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Solution

The fourth proportional to 13,099.72, 19,539.04 and 11,129.80 is: 16,600.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,099.72 : 19,539.04 = 11,129.80 : x
  2. Step 2: Convert to fraction form
    13,099.72/19,539.04 = 11,129.80/x
  3. Step 3: Cross multiply
    13,099.72x = 19,539.04 × 11,129.80
  4. Step 4: Simplify right side
    13,099.72x = 217,465,607.39
  5. Step 5: Solve for x
    x = 217,465,607.39/13,099.72
  6. Step 6: Final answer
    x = 16,600.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.